Mitochondrial health

Mitochondrial health covers how your cells produce energy (ATP) and how that impacts stamina, recovery, metabolic health, and aging. Learn how training, nutrition, sleep, and targeted supplements can support mitochondrial function for better performance, body composition, and long-term vitality.

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The essentials for mitochondrial health — then explore the latest posts below.

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 25–30%, lowering ATP production and slowing repair, fat metabolism, and hormone output—changes many researchers consider a core driver of aging. The good news is that mitochondria can respond to the right signals, and this guide shows how to recognize dysfunction and rebuild ...

The science of caffeine free energy drinks: How to boost focus without the crash

The science of caffeine free energy drinks: How to boost focus without the crash

Dr. Jonathan Pierce, PhD avatar
Dr. Jonathan Pierce, PhD: Clinical Psychologist & Neuroscience Specialist
Jan 10, 2026 · 11 min read

Caffeine-free energy drinks can boost focus without a “crash” by supporting real cellular energy—ATP production in the mitochondria (Krebs cycle) and oxygen/nutrient delivery—rather than blocking brain adenosine receptors, which masks fatigue while adenosine continues to accumulate. Here’s how ingredients like B-vitamins, amino acids, and electrolytes aim to power performance without triggering the cortisol-and-adrenaline stress spike. ...

The science of supplements: Which vitamins actually fight male fatigue?

The science of supplements: Which vitamins actually fight male fatigue?

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Dec 18, 2025 · 11 min read

In men with low or marginal levels, repleting key energy cofactors — B vitamins (especially B12, folate, and B6) plus vitamin D and zinc — can reduce fatigue by supporting mitochondrial ATP production and stabilizing testosterone-related energy pathways. Here’s how to spot the signals, confirm them with the right labs, and target what’s actually limiting ...

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