Aug 28, 2026 · 31 min · 10 segments
Send us Fan Mail Keto. Carnivore. Vegan. Mediterranean. Low-carb. Low-fat. With so many competing opinions about nutrition, eating for health and…
Greg DennisHost
You can find convincing people telling you to go vegan, eat Mediterranean, eat carnivore, eat keto, that meat causes cancer.

So I've been studying this nutrition as it pertains to longevity for years, as well as changes to my own kind of nutritional regimen.

Science evolves and my clinical experience changes and just how we interpret things.

kind of where I've landed personally what I recommend most healthy people do as far as nutrition why protein is so important should we eat carbohydrates should we not where the fats fit in why I still do sometimes use low carb diets therapeutically I'll talk briefly about vegan keto carnivore diets and why I think we're making nutrition much more complicated than it needs to be So first principle I want to discuss is calories do matter.

And then I was to a point where I didn't really think calories matter as long as what you were ingesting were good calories.

You know, there was a time when I focused much more on food quality, on hormones, and all those things matter.

So if you are chronically consuming more energy than you're using, you are likely to gain weight.

If you're carrying excess body fat, particularly visceral fat, that affects metabolic health.

You can find convincing people telling you to go vegan, eat Mediterranean, eat carnivore, eat keto, that meat causes cancer.

So I've been studying this nutrition as it pertains to longevity for years, as well as changes to my own kind of nutritional regimen.

Science evolves and my clinical experience changes and just how we interpret things.

kind of where I've landed personally what I recommend most healthy people do as far as nutrition why protein is so important should we eat carbohydrates should we not where the fats fit in why I still do sometimes use low carb diets therapeutically I'll talk briefly about vegan keto carnivore diets and why I think we're making nutrition much more complicated than it needs to be So first principle I want to discuss is calories do matter.

And then I was to a point where I didn't really think calories matter as long as what you were ingesting were good calories.

You know, there was a time when I focused much more on food quality, on hormones, and all those things matter.

So if you are chronically consuming more energy than you're using, you are likely to gain weight.

If you're carrying excess body fat, particularly visceral fat, that affects metabolic health.
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