A new paper proposes a single ratio, read off a fingerprick, that tells you where your metabolism is headed. It started in a cancer clinic. Its authors think it belongs in every MetFix affiliate.

A primer on how modern diets disrupted human metabolic flexibility

Ketosis may support the cellular cleanup systems that decline with age

A new mechanism helps explain how exercise supports long-term brain health

Why removing additives helps—but real food still matters more

What this increasingly popular cholesterol marker measures—and why its meaning depends on metabolic context

How the stuff that keeps your salad dressing from separating may be quietly remodeling your gut

How whole foods activate the body’s own GLP-1 system—without the drugs.

Understanding why high-intensity effort can send glucose higher before it comes back down.