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

What is sex hormone binding globulin? How SHBG levels shape testosterone in men

What is sex hormone binding globulin? How SHBG levels shape testosterone in men

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Dec 09, 2025 · 14 min read

Sex hormone binding globulin is a liver made protein that binds testosterone and other sex hormones, and SHBG levels help predict how much testosterone is actually available to your tissues. If you have low testosterone symptoms but “normal” total testosterone, SHBG is often the missing piece that explains why you still feel off. “Most guys ...

What is a red light therapy hat? The science based way to use it for male pattern hair loss

What is a red light therapy hat? The science based way to use it for male pattern hair loss

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Dec 08, 2025 · 15 min read

A red light therapy hat is a wearable cap or helmet that delivers low wavelength red light to your scalp to stimulate hair follicles in some men with male pattern hair loss. It can be a useful tool, but only when the diagnosis is right and the routine is consistent enough to match what clinical ...

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 · 11 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 ...

Metformin without prescribed is risky. Here is how Veedma helps men do it the right way

Metformin without prescribed is risky. Here is how Veedma helps men do it the right way

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Dec 08, 2025 · 12 min read

Taking metformin without a prescription is risky. Here’s how to do it safely with clinician supervision. You cannot safely take metformin without a prescription because metformin is not sold over the counter and it can cause side effects, drug interactions, and problems in men with certain medical conditions. If you are looking at metformin for ...

Henry Cavill weight training: The physiology behind the Man of Steel’s physique

Henry Cavill weight training: The physiology behind the Man of Steel’s physique

Dr. Bruno Rodriguez, DPT, CSCS avatar
Dr. Bruno Rodriguez, DPT, CSCS: Strength, Recovery, and Physical Therapy Expert
Dec 07, 2025 · 11 min read

Henry Cavill’s “superhero” build (reportedly about 190 to 210 lb on screen) is achieved by combining high-mechanical-tension lifting to stimulate hypertrophy with metabolic work (including fasted cardio) that can support energy balance and lipid oxidation. Here’s how recovery, neuromuscular adaptation, and joint-protective programming make that body composition sustainable instead of short-lived “ego lifting.” “When we ...

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