Stephen B

Herd Immunity

Is Herd Immunity Even Possible with Coronavirus?

We’ve been hearing talk about herd immunity quite a lot recently. Is this our light at the end of the COVID-19 tunnel or just more media hype? In this post, I attempt to get a more realistic picture of what’s it actually means to achieve herd immunity, and what it takes to achieve it. What is Herd Immunity? Herd immunity occurs when a certain percentage of a population has become immune to infection by a given pathogen, in this case SARS-CoV-2, the virus that causes COVID-19. Once the threshold has been reached, the chain of infection is disrupted enough that even individuals who are not immune to infection enjoy a reduced risk of catching the disease. In practical terms, it is the point at which community spread has dropping enough that we can stop wearing masks in public. Immunity comes from the presence of antibodies which are acquired either by vaccination (which currently doesn’t exist) or by prior infection. How do we achieve Herd Immunity? For your garden varieties of influenza, it takes between 33 and 44 percent of the population to be immune before herd-immunity status is achieved. That most certainly does not apply to SARS-CoV-2 because it is …

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An assortment of nutritional supplements

The COVID-19 Cocktail

In light of the lack of vaccine or any other “cure” for COVID-19, a lot of focus on preventing the virus from getting a foot-hold and on supporting your immune system to fight the virus. Here is a “cheat sheet” of things you can do right now to help fight the virus.

COVID-19: How to protect yourself and your family — Dr. David Price

Warning! This video was originally posted on March 22, 2020. New research suggests that, contrary to Dr. Price’s advice, we should all be wearing masks, in addition to physical distancing. This video has already been viral for weeks (no pun intended) and some will say I’m late sharing this, but I keep getting asked about it, so here it is. If you prefer to watch the original Vimeo-hosted video, click here. “new research suggest that we need to be more concerned about aerosol transmission of the virus. In a nutshell, we should all be wearing masks, in addition to physical distancing, hand sanitising and avoiding facial contact.” When this video was recorded on March 22, 2020 New York had only reported 117 deaths related to COVID-19. As of this writing, the death count is around 7000 and is project to rise to over 13,000 by the end of this month. I still share Dr. Price’s optimism that we are going to win this battle, but new research suggest that we need to be more concerned about aerosol transmission of the virus. In a nutshell, we should all be wearing masks, in addition to physical distancing, hand sanitising and avoiding facial …

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COVID-19 Live update stream

COVID-19: Live Stats

I have no idea how long this will stay live but I do find it interesting to compare the COVID-19 cases geographically in near realtime. It also show a countdown timer whenever one region is about to surpass another (such as when the US approached the total case counts of Italy).

COVID-19: Ridiculously Simple, Yet Ridiculously Hard

The good news is that preventing infection by COVID-19 is actually very simple: keep your hands clean/sanitised don’t touch your eyes, nose or mouth wear a mask practise social distancing cough or sneeze into your elbow We already have a lot of empirical data to back up these recommendations and, if we all practised these recommendations 52 weeks a year, there would be a much lower incidences of seasonal flus and colds. To understand these recommendations, we need to look at the epidemiology of the disease; specifically, how COVID-19 spreads from person to person. The bad news is that many of us are finding if difficult to stick to the advice or are just doing it wrong! Alas, there are still some people who are in outright denial or defiance. This needs to be said again and again because with cities on lockdown and government officials giving daily briefs on the direction we are headed if we don’t “flatten the curve”, I still see people on public transit biting their nails, picking their noses and sneezing or coughing into their hands, then grabbing the handrails to get off the vehicles! Vectors of Transmission We all need to understand how COVID-19 …

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photo of half a pink grapefruit

Yet Another Fad Diet?

What kind of diet is the Post-Modern Diet? Is it keto? Is it vegan? Is it Palaeo? Is it another fad diet?

These are some of the common questions I get asked. The short answer is that the Post-Modern Diet is not a particular regimen. I think of it as the sum of the useful knowledge that I have accumulated in the last 20 years and the application of that knowledge.

Looking ahead with 20-20 Vision

The Road Ahead

First I want to thank you all, for your support and valuable input over last five years. It has been a real learning experience and I have a lot more clarity in terms of how the Post-Modern Diet can best serve you. One outcome is that this site will now focus on my own unique perspectives on nutrition and health, along with some occasional rants and maybe a few wild conjectures. Community-focused content has moved to the membership site at I hope you like the changes. Stay tuned from some great things in 2020!

Insulin hypodermic and blood sugar tester

Isn’t it Time We Abandoned Glycemic Index?

Glycemic index (GI) has seen wide popularity among weight-loss dieters. Originally intended to be used by diabetics, it is a method of rating foods according to how much they impact a rise in blood glucose levels. Prior to the GI all that existed was the “Exchange System”, or “Exchange Lists” system of classifying foods. Developed in the 1950s, its purpose was to raise awareness about the nutritional equivalency of foods in terms of macronutrients, and classify them in such a way that food substitutions could be made that would provide nutritional equivalency. The Exchange System did not take into account that some foods impacted blood sugar more than others, regardless of their net carbohydrate levels. The Glycemic Index did take this impact into account. GI was the outcome of research done by Dr. David Jenkins and his team at University of Toronto. Jenkins, an MD and professor in the department of Nutritional Sciences at U of T, first wrote a paper on GI, published in the American Journal of Clinical Nutrition in 1981. Jenkins’ team tested the most popular carbohydrate-based foods to determine the rate at which they raise blood glucose within a two-hour period after consumption. Pure glucose was …

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