Peer-reviewed research concerning sun & vitamin d, summarized and appraised in plain language with every source cited.
This study looked at whether time spent outdoors is linked to testosterone in men. It analyzed 2,205 men in the US National Health and Nutrition Examination Survey, tracking daily outdoor…
This study set out to see whether exposure to bright light is linked to testosterone in men, an area far less studied than diet and exercise. It analyzed data from…
This study set out to identify which factors might influence pregnancy success in couples undergoing assisted reproductive technology (ART, fertility treatments that handle eggs and sperm outside the body). It…
This study looked at whether vitamin D levels track with testosterone, and with hypogonadism (when the testicles do not make enough testosterone, which shows up as low drive, fatigue and…