Thursday, May 01, 2025

Dietary changes and life hacks

Over the past few days, I've been reading a few books by Dr Steven Gundry MD about how our modern diets aren't good for our bodies (the books are 'The gut-brain paradox' and 'The energy paradox'). His wiki page is very critical of the claims that Gundry makes, although the wiki is limited to Gundry's lectin-free diet and doesn't mention very much else. The books are very American-centric; not all of us eat the same diet as the average American, and so some of the advice/ranting is irrelevant. That said, there are some small valuable pieces scattered here and there throughout the books.

I don't suffer from brain fog (except when I'm ill and there's an explanation for that) nor do I need to 'improve my mood'; I'm not gregarious and never will be, so there's no need to fight this. I eat many 'good' foods and I walk between 7-10 km a day, so there's plenty of exercise.

The one thing that I don't like about my body is that I am overweight. No doubt part of this is due to the fact that I have been working from home for four years, and the distance from my desk to the fridge is very short. I have the habit - that I have to break - of eating something, normally a biscuit, whenever I drink. And as I am advised to drink a lot, I also eat too many biscuits each day. What does Dr Gundry have to say about obesity?

Gundry writes a great deal about the microbiome (i.e. the bacteria and fungi living within us in a symbiotic relationship) and how we should nourish it as we will reap the benefits from doing so. Eating more fibre is always recommended as we never eat enough these days with processed foods, but the fibre isn't for us but rather for the microbiome. For several months now I've been taking a probiotic pill each day - Bio 25 - that contains 11 different species of bacteria that are touted to alleviate various digestive disorders. It's difficult to be scientific about this when I'm the sole subject, but I think that this has helped me.

There was a hint in 'The gut-brain paradox' that the microbiome can help one lose weight, so I googled this topic and found that there is a bacterium called Lactobacillus Gasseri that is indeed touted to help weight loss. But being a (failed) doctoral student, I have to look for scientific research that shows this is so. I admit that I didn't look very far but found an interesting paper on the topic. To quote its conclusion, It seems that the use of a high dose of L. gasseri BNR17 in clinical trials is associated with more pleasant [sic] results on weight loss.

This bacterium is not one of the eleven species that are contained within the probiotic that I currently take, so I approached the probiotic's manufacturers via a WhatsApp conversation, asking which of their products contains this bacterium. The answer came back: Bio Female. Yes, this species is included in a product aimed for women only! Looking at the five bacterial species contained within this probiotic, I can see that one is the one I'm looking for, and two are contained in my current probiotic. Maybe in the future I'll take the new one and stop taking the old.

Another hint that I found was 'drink vinegar dissolved in water'. I became aware of  his hint, or hack if you prefer, two years ago in 'The Glucose Revolution'1. At the time, I found a paper that said that citric acid (as found in lemon juice) is more effective at retarding amylase (the enzyme that breaks down starch) in the mouth than is acetic acid (vinegar). But Gundry takes this a step further: the acetic acid both slows the breakdown of starch in the stomach that aids the mitochondria (the part of the cell that produces energy) in working more efficiently, but also provides acetic acid as is that is used to create short chain fatty acids, that in Gundry's opinion are lacking.

Of course, I have to find peer reviewed approval of this idea and so found this paper that shows that The addition of 5 mL, 10 mL or 15 mL of ACV [Apple cider vinegar] to the diet resulted in significant decreases in body weight and BMI at weeks 4, 8 and 12 of ACV intake, when compared with baseline (week 0) (p<0.05). The decrease in body weight and BMI seemed to be dose-dependent, with the group receiving 15 mL of ACV showing the most important reduction. I saw that the group that added 15 ml vinegar daily to their diets reduced their weight by 10% after twelve weeks! They were drinking the vinegar on an empty stomach, whereas I'm drinking it through the day.

A final hack is to reduce one's eating hours. I eat breakfast at 6:30 am, lunch at 1 pm and a small supper at around 6 pm; the hack would be to eat 'supper' - normally a slice of bread with cheese and cucumber - at around 4 pm. This means that my body will be without food - or in a fasting state - for fourteen and a half hours. There is a saying that I thought originated in the Israeli army but is also quoted by Gundry (in English): what doesn't kill you strengthens you*. Put another way (in my words), a little suffering helps the body.

Gundry writes: Another study involving human volunteers, carried out by circadian researcher Dr. Satchin Panda at the Salk Institute, showed that reducing your “feeding” time (whether you’re a mouse or a human being) to ten hours—leaving fourteen hours of non-eating—conferred huge benefits over eating and digesting for fifteen hours and fasting for nine or fewer hours. Dr. Panda found that even when slightly overweight people reduced their eating window to ten hours, they reset their cellular clocks and lost weight, were much more energetic, slept better, had improved moods and sharper thinking—all over the course of just a few months.

I drink a glass of water before I start my morning walk and eat on my return; Gundry writes using your muscles in a fasted state promotes greater mitogenesis and hence greater energy production. I need to add some vinegar to that water to really help.

So here we are. I'll start on these hacks right away (I've been drinking vinegar for the past few days) and hopefully I will see some decrease in my weight.

* Apparently this came from Friedrich Nietzsche: “What doesn’t kill me makes me stronger.”.

Internal links
[1] 1621



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