The Vitality Record

The Leucine Threshold. Why 25 Grams of Protein May Not Be Building Anything.

There is a number that decides whether a meal builds muscle or simply passes through you, and almost nobody is tracking it. It is not grams of protein....

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Your Gut Is Not Just Digesting Your Protein. It Is Deciding How Much of It Reaches Your Muscle.

You can dose your protein correctly, time it precisely, and choose a high-quality source. And still, if the gut delivering it to your muscle is compromised, inflamed, or...

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Creatine Is Not Just for Athletes. It Never Was.

For decades creatine has been filed away as a bodybuilder supplement. That framing has done enormous harm to a generation of adults who needed it most. Here is...

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What NAD+ Actually Does. And Why Your Levels Are Already Declining.

NAD+ has become one of the most discussed molecules in longevity science. Most of what you have heard about it is either incomplete or wrong. Here is what...

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Your Protein Is Working Against You After 40. Here Is Why.

You are eating enough. You are supplementing. You are showing up. And still, something is not adding up. Here is the biological reason your protein may not be...

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The Role of B-Vitamins in Energy, Cellular Health, and Healthy Aging

B-vitamins are foundational to cellular energy, muscle metabolism, and healthy aging. Yet deficiency in adults over 40 is more common than most realize, and standard supplements deliver them...

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