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

Finding the best men’s groin deodorant: Science, safety, and what actually works

Finding the best men’s groin deodorant: Science, safety, and what actually works

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Dec 10, 2025 · 14 min read

The best men’s groin deodorant is a low-fragrance, genital-safe formula that reduces odor by suppressing bacteria like Corynebacterium and Staphylococcus (which break apocrine sweat into volatile fatty acids and sulfur compounds), controls moisture, and protects the skin barrier rather than stripping it. Here’s how to choose one you can use daily without turning “freshness” into ...

Ranking the healthiest cut of steak for building muscle and managing weight

Ranking the healthiest cut of steak for building muscle and managing weight

Dr. Bruno Rodriguez, DPT, CSCS avatar
Dr. Bruno Rodriguez, DPT, CSCS: Strength, Recovery, and Physical Therapy Expert
Dec 10, 2025 · 11 min read

The healthiest cut of steak for building muscle while managing weight is eye of round, because it’s one of the leanest options and keeps calories low by minimizing fat (9 calories per gram) while prioritizing protein (4 calories per gram). Here’s how to rank the leanest cuts so you still get leucine-driven muscle protein synthesis ...

Glycine for sleep and performance: The amino acid you might be missing

Glycine for sleep and performance: The amino acid you might be missing

Dr. Jonathan Pierce, PhD avatar
Dr. Jonathan Pierce, PhD: Clinical Psychologist & Neuroscience Specialist
Dec 09, 2025 · 10 min read

Glycine may improve sleep quality by helping lower core body temperature by roughly 2–3°F—a key physiological trigger for entering slow-wave (deep) sleep—by increasing blood flow to the extremities to dissipate heat. That thermoregulatory “cooling switch” is why this overlooked amino acid can support deeper, more restorative sleep rather than just making you feel sedated. “We ...

Does testosterone increase metabolism in men?

Does testosterone increase metabolism in men?

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Dec 09, 2025 · 12 min read

In men with confirmed testosterone deficiency, testosterone replacement can modestly increase metabolic rate over 6–12 months, largely by adding lean muscle (which raises basal metabolic rate) and reducing visceral fat. The biggest payoff shows up when strength training, protein intake, and sleep are dialed in—and men with normal levels usually see little metabolic benefit while ...

What is a red light therapy hat and should men use one for hair loss?

What is a red light therapy hat and should men use one for hair loss?

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Dec 08, 2025 · 14 min read

If you are staring at your hairline in the mirror and wondering what is a red light therapy hat and whether it can save your fade, you are not alone. Here is how these glowing caps work, what the science says, and how to decide if one fits into your hair-loss game plan. “A red ...

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