Blogs
Do testosterone boosters work, real evidence
Most over-the-counter testosterone boosters lack strong clinical evidence supporting their effectiveness. A comprehensive evaluation of 50 popular testosterone booster supplements found only 24.8% contained ingredients with data demonstrating they actually increase...
Chemicals that lower testosterone, everyday toxins
Several common chemicals classified as endocrine disruptors, including BPA, phthalates, parabens, and certain pesticides, have been linked in research to lower testosterone levels. These compounds are found throughout everyday items like plastic containers, personal...
At home thyroid tests, accuracy and when to use
At-home thyroid tests, when purchased from reputable, CLIA-certified providers and used correctly, are generally accurate for screening purposes, particularly for TSH levels. However, they're best used as a convenient first step rather than a replacement for...
Vitamin D and testosterone, evidence overview
Vitamin D and testosterone are associated in observational research, with men who have higher vitamin D levels often showing somewhat higher testosterone. However, the evidence for vitamin D supplementation actually raising testosterone levels remains inconsistent...
Sleep and testosterone, why deep rest matters
Sleep and testosterone are tightly connected, with the majority of daily testosterone release occurring during deep sleep stages. Research shows that restricting sleep to just five hours per night for one week can reduce testosterone levels by 10-15% in healthy young...
Is testosterone addictive, dependence and abuse
Properly prescribed and monitored testosterone replacement therapy (TRT) carries a low risk of addiction. Testosterone addiction and abuse are far more commonly associated with high-dose anabolic steroid misuse, often used without medical supervision for extreme...