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All the latest articles from our medical experts on testosterone, men's health, and longevity.

Sauna health benefits: Steam or infrared?

Sauna health benefits: Steam or infrared?

Dr. Bruno Rodriguez, DPT, CSCS avatar
Dr. Bruno Rodriguez, DPT, CSCS: Strength, Recovery, and Physical Therapy Expert
Oct 21, 2025 · 14 min read

Both traditional (steam/hot-air) and infrared saunas can support cardiovascular health if they raise your body temperature enough to trigger vasodilation and a “passive cardio” heart-rate response (often ~100–150 bpm), but the strongest long-term outcome data come from Finnish-style saunas (70–100 °C), where 4–7 sessions per week was linked to a 63% lower risk of sudden ...

Low libido: When the brain is the issue

Low libido: When the brain is the issue

Dr. Jonathan Pierce, PhD avatar
Dr. Jonathan Pierce, PhD: Clinical Psychologist & Neuroscience Specialist
Oct 19, 2025 · 15 min read

Low libido in men is often a brain-and-life issue: changes in reward and stress signaling (including dopamine- and norepinephrine-driven “wanting”) can lower sexual desire for weeks or months even when testosterone is normal. About 15–25% of men report reduced desire at some point—here’s how mood, stress, medications, hormones, and daily habits interact, and what actually ...

Top 5 natural ways to increase testosterone

Top 5 natural ways to increase testosterone

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Oct 18, 2025 · 13 min read

Weight loss, better sleep, smarter training, stress control, and fixing silent medical problems are the top 5 natural ways to increase testosterone. Here is how they work and how to build a practical plan with lab numbers that actually mean something. “Start with the basics. Lose excess weight, protect your sleep, train your muscles, and ...

5 testosterone side effects you must be aware of

5 testosterone side effects you must be aware of

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Oct 14, 2025 · 15 min read

Testosterone replacement commonly causes a 2–5 mmHg rise in blood pressure, can thicken blood via erythrocytosis (hematocrit may climb to ≥54%), may suppress sperm production and fertility, can increase oily skin/acne, and can worsen obstructive sleep apnea. Tracking blood pressure, hematocrit, and symptoms from day one helps you and your clinician adjust dose or formulation ...

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