Pandemic Perspective #21 Covidiocy August 15, 2020

More than six months into the coronavirus pandemic there are contradictory opinions about whether it is rising, leveling off or declining. That’s nothing compared to the idiocy – already named Covidiocy – that permeates society like an epidemic. (Sorry – couldn’t resist.) Scientists, journalists and politicians (especially politicians) are all part of the clown force.

Covidiocy is defined as the loss of the ability to think logically during a pandemic. It’s nothing new; bizarre ideas and practices have been rife during everything from the Black Death to the Spanish flu. The modern media, of course have put it in our faces like never before.

Speaking of faces, the covidiots that wear face masks are the most obvious.  It’s bipartisan; Anthony Fauci, Jerry Nadler and Gavin Newsom have been photographed with their masks under their noses or hanging on their chins. Democrats point to the times when Donald Trump went barefaced completely. Before our fitness center closed I actually counted 16 fellow exercisers right around me who thought that they were wearing mouth masks, not face masks.

It’s hard to open a web page these days that doesn’t include an ad for masks – including the ones with valves, which make breathing easier but also allow any germs in your exhalation to waft unimpeded through the air around you. Plain cloth masks such as bandanas are comfortable but just as worthless.

Perhaps the most idiotic are the politicians who have decreed that we should wear a mask even when home alone, alone in our cars, during a Zoom session, when walking in the park with a family member or even when having sex! How scientific!

Then there is statistical covidiocy – such as the numerous instances in which persons, listed as fatal cases and who died with the coronavirus were included among those who died of coronavirus – including one report of a person who died of a gunshot wound. (I’ll concede that some of those reports are made up but many, not just a handful, are valid.)

The just-announced democrat vice presidential candidate is recorded on video as saying that young people are stupid. Having at some point in the past being young and stupid myself, I totally agree. Seeing the many videos and photos of young people at parties, bars and other venues, crowded together, vocalizing, maskless and clearly not “distancing” reinforces that opinion.

By the way, how is your supply of toilet paper?


Pandemic Perspective #20 – August 8, 2020

Thinking zinc? Think again.

Zinc has come out of the shadows, thanks to SARS-CoV-19. It is an essential nutrient, participating in several hundred chemical reactions throughout the body. Zinc deficiency can have severe consequences that range from hair loss to severe mental retardation and dwarfism but it is uncommon in places like the United States. It’s also vital for a healthy immune system; elderly persons may have inadequate levels of zinc, making them more susceptible to infections, especially pneumonia.

Red meat, shellfish, whole grains, beans and nuts are good sources of zinc. Supplements are rarely necessary and most multivitamin/multimineral preparations provide the recommended intake of roughly ten milligrams daily.

Because zinc is important for optimal immune function it is being studied, especially in conjunction with hydroxychloroquine, for the treatment of COVID-19. As of this date (August 8, 2020) there is no conclusive evidence that taking a zinc supplement will influence the outcome of coronavirus infection although some studies do show some benefit.

Zinc supplements have been around for years for the prevention and treatment of simple colds. There again, studies are mixed, although there is evidence that such supplements shorten the duration of a cold by a couple of days. In developing countries, where zinc deficiency is common, the benefit of zinc in preventing respiratory infections is clearer.

High doses of zinc, especially when taken for more than a few weeks, can cause gastrointestinal irritation and in persons who use an intranasal preparation, loss of the sense of smell can be permanent.

Should you take a zinc supplement to prevent COVID-19? The answer is no. If you take it when you are starting to develop a cough, sore throat or runny nose, don’t take it for more than a few days and never more than 40 milligrams per day.

If you are in a group that might be at risk of zinc deficiency (older, diabetic, vegan) a multivitamin/multimineral that provides a full complement of nutrients is a better choice. Even better is a healthy diet: fruits, vegetables, nuts, beans, whole grains, fish, occasional red meat – and no junk food!




In the news                  August 1, 2020

The other diabetes – a new scenario

You may have read that the lethality of the current coronavirus increases dramatically in persons with diabetes. Several countries have reported that more than half of those who died had diabetes, overwhelmingly type 2, which had previously been known as adult onset diabetes.

As I have noted in past blogs, pediatricians have recognized for decades that when a disease such as mumps occurs in genetically susceptible persons they sometimes develop type 1 diabetes (juvenile onset). It appears that the virus not only destroys insulin-producing cells within the pancreas, it releases fragments of those cells that trigger an immune response that finishes off the cells that are left. When the production of insulin ceases, daily injections are necessary to sustain life.

The mumps virus is just one example but other viruses can also be the villains. In 2002 the SARS virus and in 2012 the MERS virus, both coronaviruses, were found to be capable of destroying insulin-producing cells. Italian physicians were among the first to report that some SARS-CoV-2 patients had type 1 diabetes (T1DM) and that in many cases the condition had not previously been diagnosed. This raises the disturbing possibility that SARS-CoV-2 actually causes T1DM and that because of the sheer numbers of infected persons throughout the globe we are going to see an epidemic of the disease.

The picture is far from clear and it is much more complicated than the simple explanation that I offer here. Besides genetics other factors come into play including the mechanism by which viruses attack those insulin-producing cells, the details of the patient’s immune response, the effect of antiviral drugs or other medications that might halt or slow down the process and how physicians can manage the complex biochemical abnormalities that result from the combination of a life-threatening viral infection and an equally lethal metabolic disorder.

The big question for those who have type 1 diabetes or have a family member who does: will COVID-19 increase the risk of dying? It appears not. In fact, physicians in Italy suggest that the risk of acquiring the infection and of having severe complications appears to be lower in persons with type 1 disease. However, the numbers observed so far are very small, the explanation may have nothing to do with the virus itself and systematic analyses are only now getting started.

Stay tuned as we experience one more surprising element of this unusual pandemic.


Annoyances of aging: that pesky intestinal tract.

This week we’ll start from the top with GERD (GastroEsophageal Reflux Disease) that can be as mild as heartburn or as severe as bringing up stomach acid that you can taste. This happens when the valve-like apparatus between the esophagus and the stomach becomes relaxed and incompetent as we get older. Sometimes the cause is a hiatal hernia, a defect in the diaphragm, the sheet of muscle that separates the chest from the abdomen.

In most persons the symptoms of GERD are mild and can be relieved by taking a Tums or two. When the acid-induced irritation of the lower esophagus becomes frequent and severe it’s time to see your local gastroenterologist. He or she may determine that the cause is related to a prescription medication, to a hiatal hernia or simply obesity. It may be necessary to take a look or to do other tests in order to rule out specific conditions such as Barrett’s esophagus, which carries a low but real risk of cancer.

Medications that lower the production of stomach acid include PPIs (Proton Pump Inhibitors) and H2 blockers but both of these prescription drugs are associated with side effects that include a greater risk of cancer, dementia and fractures. One of these, ranitidine (Zantac), has been removed from the market by the FDA. Stomach acid is necessary for the proper processing of vitamin B12 and medications that reduce it can induce anemia as well as damage to the nervous system.

You can take some consolation from the fact that you have lots of company: about 20 percent of Americans have GERD and even more have simple heartburn. Most of us can handle it well with antacids but when the symptoms are severe it’s another one of those annoyances of aging that in reality are indicators of a more serious problem.






Pandemic Perspective #19    July 25, 2020

COVID-19, obesity and Type 2 diabetes. Is this the wake-up call?

For more than a half century the First World has been experiencing epidemics of obesity and type 2 diabetes. They are so closely related that some use the term diabesity to emphasize their twinship. Together they are responsible for or contribute to the chronic non-infectious diseases that comprise nearly all of the leading causes of death. From the earliest weeks of the COVID-19 pandemic it was clear that obesity and diabetes, along with their complications of heart disease, hypertension, kidney disease and immune system dysfunction were serious comorbidities, especially among the elderly.

At the beginning of the 20th century only about five percent of Americans were obese and type 2 diabetes, which occurred mostly in persons of late middle age, was so uncommon that it wasn’t clearly differentiated from type 1 diabetes until the 1950s. Today’s numbers are appalling: more than forty percent of us are obese and nearly as many more are overweight. More than ten percent have type 2 diabetes, and 34.5 percent of Americans have prediabetes according to the CDC (Centers for Disease Control and Prevention in their 2020 report). These trends are getting worse, killing increasing numbers of Americans and threatening the economic stability of the healthcare system.

The SARS-CoV-2 virus is a particular threat to older persons not only because they have diabesity but because these conditions weaken an immune system that is already faltering because of the aging process. Diabetes causes damage in another way: the long-term elevation of blood sugar causes blood vessels to become distorted, leaky and unable to properly deliver oxygen and nutrients and to dispose of waste products. The final blow is coronavirus infection, which attacks already-damaged blood vessels. This seems to explain the high incidence of heart attacks, strokes, blood clots and peculiar changes in the fingers and toes of many victims.

The new coronavirus, already the source of surprises, has come up with another: it causes abnormally high levels of blood sugar in persons with no prior history of diabetes or prediabetes, a phenomenon called stress hyperglycemia. Patients with this complication as well as diabetics whose blood sugar has not been well controlled are two to three times as likely to die as those whose blood sugar stays in the normal range.

It’s a sad fact that obesity and type 2 diabetes are the results of lifestyle, not aging. Perhaps humanity can salvage something from the tragedy of this pandemic. Our children should learn the basic principles of good health in the classroom: a mostly plant-based diet that is free of refined grains and sugar, and regular physical activity. When the next pandemic arrives – and there certainly will be others – a population that is free of diabesity will handle it as well as the COVID-19-infected youngsters of 2020, virtually all of whom have come through it with ease.

Pandemic Perspective #18      July 18

School opening  part 2

The calls to re-open schools are increasing, led not only by exhausted, frustrated parents but by national child advocate organizations urging that wherever possible, students should begin the new school year in the presence of teachers and other children. The American Academy of Pediatrics, the National Education Association and the American Federation of Teachers are among those who recognize that SARS-CoV-2 poses little risk to persons of school age but that more than education is involved.

In my last post I referenced coronavirus parties at school analogous to chickenpox parties of the pre-varicella vaccine era. That was a misguided comment, as brought to my attention by someone whose opinion I respect. There is a vast difference between deliberately exposing children to infection as compared with allowing them to be present in schools, where there may be infected persons. Still, the comment was misleading and not appropriate.

A major factor in this decision process is the recognition that as of July 17, 2020 there have been no deaths from coronavirus in children under the age of 18 in California. In other states and countries, including Spain and Italy where the disease has ravaged the populace, deaths among this age group have almost always occurred in children with underlying heart or lung disease. Until a vaccine is available for susceptible adults and children, including teachers and administrators, they should not return to school.

As noted by the AAP and other groups, schools help children to learn important social and emotional skills. Meals for disadvantaged children are important and so is the opportunity to identify situations in which a child is threatened by abuse or other safety issues. Special needs children are especially at risk but I cannot imagine any city that is unable to provide a separate, protected location for their special education teachers to educate and care for them. Both the students and their teachers can be screened in order to prevent transmission of the virus.

A national tragedy is emerging in that online learning is simply failing.  In measured studies, minority children are most at risk of falling behind, compounding the problems that already plague that group. It gives new meaning to the phrase “A mind is a terrible thing to waste.”




In the news             July 15, 2020

A few days ago I wrote about herd immunity, pointing out that if it comes about naturally it requires a very long time and it is temporary, whereas if it can be accomplished by a continual immunization program it is likely to occur relatively quickly and become permanent. For example, when immunization against the pneumococcus bacterium, a cause of minor infections such as ear infections and major ones such as meningitis and bacteremia (invasion of the bloodstream) became routine in children the incidence of pneumococcal pneumonia caused by vaccine strains among adults diminished significantly.

In the case of COVID-19 we need to think about children for another reason: they seldom become seriously ill from this new coronavirus unless they too have an underlying condition such as heart or lung disease. If we compare COVID-19 with chickenpox it reveals why opening the schools now will have significant value long-term.

Until the chickenpox (varicella) vaccine was developed in 1995 it was rare for anyone to reach adulthood without having experienced the disease. The illness is generally so mild in children that parents often staged “chickenpox parties” in the neighborhood to “get it over with.” Unfortunately about 150 children in the United States succumbed to the disease or to secondary infection every year. The story was quite different in adult victims, about twenty percent of whom developed chickenpox pneumonia and whose risk of dying was far greater. In some years prior to release of the vaccine an adult was 25 times more likely to die from chickenpox than a preschool child. Now that the virus has almost disappeared there have been almost no deaths due to chickenpox in this country in recent years.

How does this relate to COVID-19? Fatality rates begin to increase after the age of twenty; there is a dramatic rise beyond age sixty. Those beyond the age of eighty have the highest risk. In each of these age groups there is a progressively increasing incidence of type 2 diabetes. In the past few days there has been a cluster of medical journal articles (that I will discuss in next Saturday’s Pandemic Perspective blog) indicating that elevations of blood sugar even in persons who have not been diagnosed with diabetes increase the risk of severe disease and death. Obesity rates increase with age and it is a high-risk factor that often leads to the dreaded cytokine storm.

We should not fear the exposure of children to SARS-CoV-2. They have an innate resistance to severe disease, just as they do against chickenpox and they do not have the risk factors that are present in the vast majority of older adults. Further, as we have seen in other viral infections, the natural disease is likely to result in longer and stronger immunity than the vaccine-induced stimulus. A clear example is mumps, whose vaccine-induced immunity wanes dramatically during adolescence but in which natural infection produces lifelong immunity. By protecting children from COVID-19 infection we may be setting them up for a greater risk of disease when they become adults, whether or not they receive the COVID-19 vaccine.



            Memory loss. Is this the worst annoyance of aging?

We dread it more than death, fearful that having difficulty in remembering names is a prelude to dementia. The prospect of becoming unable to recognize loved ones and to be incapable of managing the day-to-day routines of living is terrible to imagine. The good news is that we can do something to ward off memory loss and postpone the onset of Alzheimer’s disease and vascular dementia. Although Alzheimer’s disease has a strong genetic component, vascular dementia has little to do with aging; it is the product of the modern lifestyle and comprises about one-half of dementia cases.

Contrary to what I was taught in medical school, we can form new brain cells throughout life by engaging in physical exercise and we can increase connections between brain cells many-fold by engaging in taxing mental activity.

Exercise is important in maintaining normal body weight. Overweight and obesity lead to a loss of brain volume; excess body fat increases the risk of type 2 diabetes by a factor of eighteen (!) which leads to blood vessel damage within the brain. That in turn leads to starvation of brain cells and increased brain cell death.

In other words, regular, moderate physical activity – 4 or 5 times a week for at least one hour at an intensity that works up a sweat – not only reduces obesity but grows new brain cells and supports the health of old ones.

Good nutrition is also critical, especially omega-3 fats, abundant in fish (or a supplement if you just don’t like fish!)

Stimulate brain health by learning a new language, how to play a new musical instrument, reading, puzzles and games.

Okinawa has the highest percentage of centenarians on the planet, people who live beyond 100 years. They can take care of themselves and they can remember the names of their great-great-grandchildren. What do they have in common? Few labor-saving devices; they carry out most chores by hand or with simple tools. They eat almost no red meat and no refined grains or sugar; most of their calories come from plant foods.

A pretty simple lifestyle, and it works.

Pandemic Perspective #17   July 11, 2020

Is herd immunity a false hope?

Almost since COVID-19 became the leading story of 2020 there has been the hope that herd immunity would bring the pandemic to an end. Not likely. Authorities have flip-flopped on issues such as transmissibility, susceptibility, mask effectiveness, the efficacy of old and new drugs and ventilator therapy. We shouldn’t be surprised if the concept of herd immunity will be tested.

When a new microbe invades a population it sickens some, kills some and infects some who show no apparent symptoms. At a given point there are too few potential victims remaining or they are too widely dispersed so that the infectious agent seems to vanish. It might circulate quietly without causing much notice but can resurface when a new population of susceptible persons arises. The surviving herd is now relatively immune but danger always lurks.

That is not the ideal type of herd immunity because it is only temporary. A more desirable form of herd immunity is based on vaccines. When most of a population has been vaccinated – measles is a good example – a virus that arrives from the outside has no place to go. As long as immunization rates remain high, ideally above ninety percent, herd immunity is permanent and can remain so for generations, unlike that which occurs in natural infections.

Because measles vaccination was so effective by the end of the 20th century the United Sates was declared to be measles-free, a state that quickly changed when increasing numbers of parents refused to allow their children to receive routine childhood vaccinations, including MMR (Measles-Mumps-Rubella). In the past two decades there have been several outbreaks of measles when persons from outside the United States introduced the virus to a population not all of whom had vaccine-induced immunity.

How will the herd react to the coronavirus? The honest answer is that no one knows. In a world without a vaccine it will take years, perhaps decades, before most of the population has been infected, leaving behind so few susceptibles that the virus becomes an annoyance and not a threat, at least temporarily as noted above. As of mid-July there have been fewer than 15 million cases worldwide. Some epidemiologists believe that there are at least ten times that many persons who have encountered the virus but who have been misdiagnosed or missed entirely because they have had few or no symptoms, a total of perhaps 150 million. Among a global population of 7.5 billion that represents only 2 percent who have experienced the virus thus far. The likelihood of a naturally-occurring herd immunity is vanishingly small, especially when government officials are madly scrambling to prevent the development of herd immunity by limiting exposure.

Enter an effective, i.e., fully protective and long-lasting vaccine. Even if some of the more than 150 companies now racing toward this goal are successful, what will it take to provide herd immunity? Again, no one knows. Some vaccine candidates require two doses; some, like the influenza vaccine, may require annual doses. Protecting most of the world’s population with even a single lifetime dose will require a logistical effort unlike any that the world has ever accomplished.

Unless there is an immediate breakthrough with a highly effective drug against the SARS-CoV-2 virus it’s likely that a quarter-million Americans will have died of this disease by the end of 2021. Roughly half will have had conditions such as diseases of the heart, lungs or kidneys; most of those will be the elderly; being overweight and having type 2 diabetes are major risk factors. Perhaps a COVID-19 vaccine will protect individuals in these groups. I certainly hope so.

Unfortunately, herd immunity will not be a factor.










Pandemic Perspective #16   July 4, 2020

Happy Independence Day!

COVID-19: It’s time to think long-term

          A couple of months into the current pandemic there was wishful thinking that it would run its course before the end of the year, that there might only be a few flare-ups in some parts of the world, that mortality rates would improve as hydroxychloroquine, remdesivir and other medications stopped the virus in its tracks and that a vaccine would put an end to it once and for all. All these speculations have been quashed or at least their timelines drastically altered.

The COVID-19 pandemic is going to be a part of everyone’s life for a long time. It will not burn itself out; it will smolder for years as it penetrates into more remote areas not yet affected.

There are two great unknowns: what percentage of the population will have to have been infected to reach herd immunity and how effective a vaccine will be. The SARS-CoV-2 virus is not just another coronavirus. Although it is much less likely to kill its victims than its predecessors, SARS and MERS, it is more transmissible and certainly more unpredictable. It is deadly for seniors and produces a pattern of symptoms in very young children that pediatricians have never seen before.

Development of a vaccine will occur with historically breathtaking speed but there’s more to it than that. Although I feel that it will be more protective than some pessimists have predicted it may require more than one dose, adding to the already obvious challenge of rapid worldwide distribution. Lurking beneath is the matter of politics. The countries in which the vaccine is being manufactured claim first dibs; developing countries have expressed fears that they will be at the end of the line.

Our personal and public habits are in a tizzy. Dr. Fauci claims that handshaking will be taboo forevermore. Try wrapping your head around that one! Will older, i.e. persons over the age of fifty, no longer hug their grandchildren? The medical establishment warns us about fomites, things like doorknobs, railings and light switches that can seed the populace with live virus particles for days. So how about cash? Financial experts have been pushing us toward a cashless society for a couple of decades. Is this their chance to get it done? After all, think of how many hands have touched the change that the store clerk hands you if you have paid in cash. It will be another boon for Apple and Samsung, whose smart phones allow us to pay for anything by letting the device hover over the item we’re purchasing. Just like in the Amazon store.

Here’s another ugly thought: no more card games, e.g. blackjack, poker and canasta, in which playing cards pass from hand to hand for a couple of hours. Will the country’s casinos require than every craps player bring his or her (properly disinfected) dice. How will those casinos reconfigure slot machines to deliver winnings without a handle or a pushbutton? Hmmm! Maybe a smartphone can do that too.

The restaurant scene has already changed and they will all now become “intimate” – quiet, uncrowded. The menu is printed anew every day and you’ll place your order with that ever-more-important smartphone.

As one wag put it, “So in retrospect, in 2015, not a single person got the answer right to ‘Where do you see yourself 5 years from now?’”






In the news             July 1, 2020

The coronavirus pandemic reminds me of the game called pick-up-sticks that kids have been playing for centuries. It may have originated in China (how’s that for irony?) but Native Americans have also been credited for its invention. It’s difficult to move a single stick without moving others, a situation that seems to be playing out in the many facets of COVID-19.

The big news this week is the surge in new cases, especially in California where the numbers are increasing by as much as 5,500 daily. But maybe those numbers reflect conditions that were not apparent or even present a month or so ago.

Perhaps the greatest tragedy of this pandemic is the high mortality rate among the elderly who have underlying diseases of the heart, lungs, kidneys and immune system. Depending on the area of the country they account for as much as ninety percent of deaths. The good news is that around the world healthcare systems are doing a better job of protecting them. That might help to explain why the global fatality rate has dropped from 7.0 percent on April 28th (from the Johns Hopkins Coronavirus Resource Center) to 6.2 percent on May 28th and 4.9 percent on June 28th.

Epidemiologists predicted early on that there would be a decrease in cases and then a new wave would arrive. China is a good example, a country that has locked down some major cities after having reported a dramatic decline in new cases. That is not a peculiar feature of the current pandemic; we know from past plagues that there could be several waves over months or years.

The mushrooming accessibility of testing also plays a role although it does not explain the rise by itself. Some states are reporting hospitalization figures that again threaten the capacity of hospitals to provide ICU beds. But there is some good news: overall, the percentage of infected patients requiring hospitalization is decreasing and so is the mortality rate among them as treatment methods improve.

Then there are “the invincibles” — young persons who don’t fear the virus, who congregate freely in bars, on beaches and various venues. Pardon the politics, but when tens of thousands of protesters disdain distancing and face masks while shouting and chanting it shouldn’t come as a great surprise that the age of infected – and hospitalized – persons is dropping. This week’s report by the San Diego Health Department noted that the greatest surge at the moment is among persons between the age of twenty and forty. To the great dismay of this younger crowd, bars, nightclubs and restaurants have again been ordered to shut down.

When we celebrate Independence Day this weekend let’s be grateful that the United States of America is not only a beacon of freedom but that it leads the world in innovation, compassion and generosity. For all those reasons we’ll emerge from the pandemic, the riots and the hurt economy like an injured bone that is stronger at the broken places.



          Decreased mobility – another annoyance of aging.

As we age we become less mobile for many reasons. Weakness of muscles, stiffness of joints, diminished flexibility, carrying extra weight and neurological diseases add up to quite a mix. When you’re at the fitness center, watching those twenty-somethings bounce around, jump three feet onto a platform from a standing start and run for what seems like hours on the treadmill is really rubbing it in. The bright side is that those of us who move more slowly and deliberately are less likely to injure ourselves. Yeah! Right!

The truth however is that we can maintain strength, flexibility and speed (Well, not so much speed.) far longer than the average person if we work at it.

Why do old people shuffle? The answer is that they don’t have enough strength in their legs to raise their feet. The sedentary lifestyle not only weakens muscles, it diminishes blood circulation to those muscles. That means less oxygenation, less removal of waste products and less ability of muscle groups to stretch.

You might have noticed after reading these blogs that several of the so-called diseases of aging can be postponed with exercise. So simple, yet so true. If you can lose a few pounds through exercise it’s like taking off a heavy backpack. And less weight relieves pressure on the hip and knee joints.

And there’s another benefit of exercise. When your legs become stronger they provide a braking effect that prevents a hard landing with every step and less of an impact on your hips, knees, ankles and feet.

The unsteadiness that results from poor balance also affects our mobility and exercise helps there too by maintaining the health of spindle cells. These are attached to healthy muscle cells and explain why we can navigate or reach for objects with our eyes closed. Spindle cells provide position sense, the loss of which has nothing to do with aging. When muscle cells shrivel from lack of activity they take spindle cells with them.

There are lots of annoyances of aging that we can’t avoid but losing our mobility isn’t one of them until we hit the century mark. Just ask Don Pellman, the 100-year-old pole vaulter who also set records in the long jump, high jump and discus throw at the San Diego Senior Olympics in 2015.




Pandemic Perspective #15      June 27, 2020

Will wine kill the coronavirus?

Well, alcohol kills the coronavirus, so maybe this is one more health benefit of wine. If only!

As the pandemic rolls on, medical workers are getting more innovative and desperate to find some way to stop it. To date there have been more than 100 studies designed to evaluate the possibility that rinsing the mouth with various chemicals, alone or in combination, might reduce the number of virus particles. These include hydrogen peroxide, povidone-iodine, chlorhexidine and cetylpyridinium chloride – and ethyl alcohol, a component of many of our favorite adult beverages.

If you have visited your dentist recently you probably were given a mouthwash that includes hydrogen peroxide, fortunately in a low concentration that doesn’t cause gagging. Healthcare workers such as dentists, their assistants and ear, nose and throat surgeons who spend long periods only inches away from virus particles that might be escaping from their patients’ mouths are properly concerned about becoming victims of the new coronavirus. If you visit one of these practitioners you’ll be given a slug of mouthwash before anything gets done.

Of the scores of studies done so far there is no clear consensus that any of the preparations will work. Some studies have only been done in vitro (the Latin term means in glass, not in a human or animal body) so that the results are very preliminary.

What researchers have found so far in studies with real people is that an oral rinse (mouthwash) does seem to have some beneficial effect but it’s not ready for prime time. It’s somewhat like the situation that I have described in earlier blogs regarding face masks: it depends. Wearing a mask does prevent some spread of virus particles from the wearer and does offer some protection to an exposed person but the devil is in the details. (Sorry for the cliché.) An infected person sheds some virus from the lungs, not just the mouth or throat. Sometimes the virus is present in the salivary glands so that using a mouthwash has only a temporary effect. We don’t know how often a rinse is necessary. Is a minute of swishing the stuff around enough or does the user have to gargle? Some of these chemicals cause allergic reactions and hydrogen peroxide can cause tissue damage in concentrations of more than 5 percent. (For reference, the hydrogen peroxide on the drugstore shelf has a concentration of 3 percent.)

But getting back to wine – it does have an alcohol content of between 5 and 20 percent. Better yet, the alcohol percentage in scotch ranges from 40 to 63 percent! Research studies – yes, they do pay scientists to study these things – show that mouthwashes containing 21 to 27 percent ethanol (as in wine and one-third as much as in Johnny Walker) combined with essential oils, reduced levels of influenza virus by a whopping 99.99 percent!

The next goal of the scientists: is red wine better than white wine? Salud! I hope that this helps you to get over the COVID-19 blues!