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Personalized Nutrition The Blood Type Diet Blog - 4YourType

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Why Your Immune System Needs Balance — Not a Boost

Oct 26th, 2026

by Dr. Peter D'Adamo

Why Your Immune System Needs Balance — Not a Boost

Discretion is the better part of valor. People often talk about “the immune system” as if it were one organ, like the heart or the liver. We say it is strong or weak and try to boost it. This is a natural way to think ab...
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Good Fits and Bad Ones

Aug 10th, 2026

by Dr. Peter D'Adamo

Good Fits and Bad Ones

Imagine you have spent your whole life in France. You think in French, you argue in French, you take your coffee standing at the counter and your lunch seriously. None of this is written down anywhere. It is simply the tuning you acquired by growing...
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The Joy of Hex

Aug 10th, 2026

by Dr. Peter D'Adamo

The Joy of Hex

In wargaming, quantity has a quality all its own. Despite my career in medicine, I’ve always fashioned myself more of a historian. In fact, every astrologer who's ever looked at my chart (not at my urging, but at the request of others) always...
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Imputing and Prestidigitation

Aug 6th, 2026

by Dr. Peter D'Adamo

Imputing and Prestidigitation

'And therefore it was imputed to him for righteousness.'Romans 4:22-25 A polygenic risk score (PRS) is an estimate of an individual’s relative genetic liability to a specific trait or complex disease, made by summing the effects of multiple ge...
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Why You Are What You Are

Jul 30th, 2026

by Dr. Peter D'Adamo

Why You Are What You Are

The ABO blood group, that simple A, B, AB, or O scrawled on your donor card, is a working museum of nearly every way that life edits its own genetic code. In one small stretch of DNA, the ABO system manages to display the full repertoire of genetic...
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Pioneers With Arrows

Jul 28th, 2026

by Dr. Peter D'Adamo

Pioneers With Arrows

A few thoughts about ‘acceptance’ in medical ‘science.’ It’s a common game to make it difficult for an idea that you despise to see the light of day. At first, when my book, Eat Right 4 Your Type was released, the most...
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Melatonin: More Than Sweet Dreams

Jul 23rd, 2026

by Dr. Peter D'Adamo

Melatonin: More Than Sweet Dreams

Mention melatonin and most people picture the same thing: a small tablet taken before bed, or the drowsiness that creeps in once the lights go down. That reputation isn't wrong, but it captures only the smallest part of the story. Melatonin is one o...
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The Wandering Nerve

Jul 21st, 2026

by Dr. Peter D'Adamo

The Wandering Nerve

There is a single nerve that touches your heart, your lungs, your gut, your voice, and your mood — and most people have never heard its name. It is the vagus nerve, the tenth cranial nerve, and its old Latin label tells you everything about it...
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Resurrecting Expectancy

Jul 16th, 2026

by Dr. Peter D'Adamo

Resurrecting Expectancy

Getting close to dying alters one's expectations. I've been building an "E-school" — a creature known as a Learning Management System. I've looked at many of these, and they are not intuitive; they don't seem to care much about the student exp...
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Actually, Don’t Take My Breath Away: How to Navigate Wildfires

Jul 16th, 2026

by D'Adamo Personalized Nutrition

Actually, Don’t Take My Breath Away: How to Navigate Wildfires

A few years back, we saw air pollution levels skyrocket here in Connecticut in the face of Canadian wildfires. Every time we stepped outside, we were confronted with a thick, dense air that burned our eyes supremely. With that, we quickly became vig...
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The Herb That Knows When to Fight and When to Calm Down

Jul 15th, 2026

by Dr. Peter D'Adamo

The Herb That Knows When to Fight and When to Calm Down

Most herbs do one thing. Echinacea pumps up your immune system. Turmeric dials down inflammation. From a scientific standpoint, what makes Andrographis unusual, and genuinely fascinating, is that it does both — depending on the circumstances....
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