Alcohol

While a glass of wine with dinner has been linked to health advantages, studies suggest that excessive alcohol use can cause testosterone levels to decrease, particularly in males. Over the course of three weeks, ingesting 30-40 grams of alcohol each day, which translates to around 2-3 standard drinks, reduced testosterone levels in males by 6.8%. Another study found that acute alcohol intoxication was related to higher testosterone levels in women but lower levels in males. However, when it comes to the effects of alcohol on testosterone, the data isn't fully clear.

In reality, human and animal studies have had conflicting outcomes, with some studies showing that alcohol may actually enhance testosterone levels in some situations. More study is needed to understand how various alcohol dosages impact testosterone levels in the general population.