Skip to content
Male Optimal
Male Optimal
Check Your Levels
Evidence-based men's health.
◆Evidence-based men's health, updated regularly◆Always consult a healthcare professional before changing your supplementation◆Every article is reviewed against peer-reviewed research◆Medical disclaimer: content is informational only, not medical advice◆Male Optimal: no bro science, no sponsored bias◆Testosterone levels vary by individual. Get tested before you supplement◆All affiliate links are disclosed. We never recommend what we would not use◆Evidence-based men's health, updated regularly◆Always consult a healthcare professional before changing your supplementation◆Every article is reviewed against peer-reviewed research◆Medical disclaimer: content is informational only, not medical advice◆Male Optimal: no bro science, no sponsored bias◆Testosterone levels vary by individual. Get tested before you supplement◆All affiliate links are disclosed. We never recommend what we would not use

Browse

Articles tagged "deficiency"

3 articles tagged with “deficiency”. View all topics

Vitamin D3 and Testosterone in Men: Why UK Men Are Deficient and What to Do About It

From October to April UK men cannot synthesise vitamin D. A 3,332 IU daily dose lifted testosterone 25 percent in trial. Here's how to dose and test cor...

Zinc Deficiency and Low Testosterone: Symptoms, Testing and How to Fix It

Mild zinc deficiency halves testosterone in 20 weeks. Spot the five signs, the 25 mg picolinate dose to restore levels, and which test confirms it.

The Optimal Vitamin D Level for Men: Testosterone, Muscle, and the Deficiency Epidemic

Most UK men are vitamin D deficient for half the year. What optimal levels look like, the testosterone link, and the correct dosing protocol.

OAI

Optimal AI

Powered by Claude

What do you want to know?

Evidence-based answers · 10 free questions per day

Or type your own question below

AI responses are informational only · not medical advice