Lifestyle & longevity

Design daily habits that support hormonal balance and long-term vitality. Master sleep and circadian timing, eat for metabolic stability, and use micronutrients with purpose. Make informed choices about alcohol, nicotine, sauna, and cold exposure. We translate longevity research into clear, practical playbooks you can apply today.

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 ...

Nature Made vs Centrum Men 50+: What science shows

Nature Made vs Centrum Men 50+: What science shows

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

For most men over 50, the best multivitamin is a “50+” formula that omits iron and emphasizes vitamin D and B12 (which can absorb less efficiently as stomach acid declines) plus magnesium, calcium, and zinc for bone, muscle, and immune support. Here’s how to compare labels like Nature Made Men’s Multivitamin 50+ and Centrum Men ...

Semaglutide and testosterone: The science of combining therapies for men

Semaglutide and testosterone: The science of combining therapies for men

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Dec 08, 2025 · 10 min read

In men with obesity (BMI over 30) and low testosterone, combining semaglutide with testosterone therapy can promote fat loss while helping preserve lean muscle by reducing adipose-driven aromatase conversion of testosterone to estradiol and supporting anabolic metabolism. Instead of treating weight and hormones as separate problems, this paired approach targets the feedback loop where visceral ...

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