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

Does testosterone affect how long you last? The science of stamina

Does testosterone affect how long you last? The science of stamina

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Dec 19, 2025 · 12 min read

Testosterone mainly supports libido and erectile function, but it does not directly increase Intravaginal Ejaculatory Latency Time (typically about 5 to 7 minutes) because ejaculation timing is largely a serotonin-mediated neurological reflex. Low testosterone can still make you feel like you are finishing “too fast” by destabilizing erections and creating a rush-to-finish pattern. Here is ...

Longevity trends for men in 2026: What is worth your time and what is noise

Longevity trends for men in 2026: What is worth your time and what is noise

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Dec 18, 2025 · 10 min read

The longevity trends most likely to improve men’s healthspan in 2026 are the ones that find risk early, restore metabolic health, and protect muscle and recovery with measurable, clinician guided steps. The noise is anything that promises “age reversal” without labs, outcomes, or safety guardrails. “The most useful longevity trends are not the flashy ones. ...

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 · 12 min read

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

Low calorie protein shakes: A clinically grounded playbook for men cutting fat

Low calorie protein shakes: A clinically grounded playbook for men cutting fat

Dr. Bruno Rodriguez, DPT, CSCS avatar
Dr. Bruno Rodriguez, DPT, CSCS: Strength, Recovery, and Physical Therapy Expert
Dec 17, 2025 · 12 min read

Low calorie protein shakes can help men lose fat while protecting muscle, as long as the shake fits your overall calorie budget (often around 100 to 200 calories for a solid protein dose) and you hit an evidence based daily protein target. Used the right way, they make a calorie deficit easier without turning your ...

CGM for nondiabetics: Is tracking blood sugar worth it for men?

CGM for nondiabetics: Is tracking blood sugar worth it for men?

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Dec 17, 2025 · 13 min read

For most men without diabetes, tracking blood sugar with a CGM is not worth it—but a 2 to 4 week, structured trial can be useful for appetite control or training-fuel troubleshooting. The key is knowing what a CGM can and cannot tell you, then using the data to make changes you can actually sustain. “For ...

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