Biological aging

Explore the science behind biological aging, including how your body's true age may differ from your chronological age. Learn strategies to slow aging at the cellular level through hormone optimization, nutrition, and lifestyle interventions.

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The essentials for biological aging — then explore the latest posts below.

Blueprint supplements for vascular health: What research says

Blueprint supplements for vascular health: What research says

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Jan 30, 2026 · 12 min read

Research does not show that the branded “Blueprint Stack” supplement bundle itself improves vascular health outcomes in men; any likely benefit comes from the Mediterranean-style foods in the routine and the cardiometabolic improvements they support. This men’s health-focused Blueprint protocol review explains what’s in the stack based on public descriptions of Bryan Johnson’s Blueprint protocol, ...

Athlete biomarker testing for longevity: The lab numbers that keep men performing longer

Athlete biomarker testing for longevity: The lab numbers that keep men performing longer

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Jan 19, 2026 · 12 min read

For longevity-focused men who train, repeating key labs, especially HbA1c (a three month average of blood sugar) and ApoB (the number of atherogenic particles that can enter artery walls), can reveal early metabolic drift and cardiovascular risk before performance drops or disease shows up. Pair those with iron, inflammation, and hormone and recovery markers to ...

BRI vs BMI for longevity: Why your waist may matter more than your weight

BRI vs BMI for longevity: Why your waist may matter more than your weight

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Jan 15, 2026 · 13 min read

BRI likely predicts longevity risk better than BMI for many men because it reflects abdominal fat distribution, not just weight for height. If your BMI is “fine” but your waistline is climbing, BRI can be the reality check that pushes you toward the right labs and the right plan. “For men, the big miss with ...

The mitochondrial theory of aging: Why your cells lose power and how to fix it

The mitochondrial theory of aging: Why your cells lose power and how to fix it

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Jan 13, 2026 · 12 min read

Between ages 30 and 70, mitochondrial function in skeletal muscle can drop by 25 to 30%, lowering ATP production and slowing repair, fat metabolism, and hormone output. Many researchers consider these changes a core driver of aging. The good news is that mitochondria can respond to the right signals, and this guide shows how to ...

Foods that kill zombie cells: The longevity plate for men who want to age better

Foods that kill zombie cells: The longevity plate for men who want to age better

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Dec 25, 2025 · 10 min read

Foods that kill zombie cells are not a single magic ingredient, but a pattern of whole foods rich in senolytic and senomorphic compounds that may help your body manage senescent cells. The science is promising, yet most “zombie cell” research uses high dose isolates, so your best move is to build an evidence based longevity ...

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