PrimeVital | Health & Fitness for Men Over 40

Man in his late 40s reviewing blood test results at a doctor's desk, black and white documentary photograph

Biological Age Calculator: What Your Blood Work Actually Reveals

Calculate your biological age from 9 routine blood test values using the clinically validated PhenoAge formula. See how your body's aging compares to your chronological age.

By PrimeVital Team9 min read

Latest

Middle-aged man in late afternoon light examining a glass of red wine on a wooden table, documentary black-and-white photograph, Leica M6, Ilford HP5 Plus, visible stubble and weathered hands, natural side light through a window

healthAug 12, 202619 min

Resveratrol and Testosterone: What the Research Shows for Men Over 40

Resveratrol activates SIRT1 and inhibits aromatase in cell studies. Here's what the human evidence actually shows for testosterone in men over 40.

Close-up of a middle-aged man's weathered hands holding a handful of saw palmetto berries outdoors, documentary black-and-white photograph, Leica M6, Ilford HP5 Plus 400, visible skin texture and calluses, natural diffused light

healthAug 11, 202618 min

Saw Palmetto and Testosterone: What the Research Shows for Men Over 40

Saw palmetto is the top-selling prostate supplement. But does it raise testosterone? Here's what 8 clinical trials actually show for men over 40.

Middle-aged man in a dimly lit laboratory examining a glass flask, documentary black-and-white photograph, Leica M6, Kodak Tri-X 400, visible stubble and concentration lines, harsh directional light

healthAug 10, 202615 min

Chrysin and Testosterone: Does This Natural Aromatase Inhibitor Actually Work?

Chrysin is the most potent natural aromatase inhibitor identified in vitro. Oral bioavailability is under 1% in humans. Here's what the research shows for men over 40.

Middle-aged man in a dim workshop examining dried fungi under a magnifying glass, documentary black-and-white photograph with grain and shadow detail

healthAug 8, 202615 min

Cordyceps and Testosterone: What the Research Shows for Men Over 40

Cordyceps sinensis doubled testosterone in Leydig cell studies via StAR protein upregulation. Here's what the animal research, limited human trials, and clinical logic actually show for men over 40.

Middle-aged man with calloused hands collecting pine cones in a forest, close-up black-and-white documentary photograph showing pollen dust on bark

healthAug 7, 202614 min

Pine Pollen and Testosterone: What the Research Shows

Pine pollen contains real androgens, but 2024–2025 pilot studies show its free testosterone effect works via SHBG reduction, not direct hormone delivery. Evidence reviewed.

Middle-aged man with weathered hands grinding black seeds in a stone mortar on a worn kitchen counter, natural window light, documentary black-and-white photograph

healthAug 6, 202615 min

Black Seed Oil and Testosterone: What the Research Shows for Men Over 40

Nigella sativa raises testosterone in infertile men by protecting Leydig cells from oxidative damage. Learn the mechanism, evidence gaps, and who benefits.

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Fitness Nutrition Health Mental Health Longevity Supplements

PrimeVital — Evidence-Based Health and Fitness for Men Over 40