No, eggs do not lower testosterone. In fact, they can actually help to increase testosterone levels due to their high content of healthy fats and cholesterol. Eating whole eggs has been shown to boost testosterone production in the body, which can lead to improved muscle growth and increased strength. Additionally, egg yolks are a great source of vitamin D which is important for maintaining optimal hormone balance in men. Therefore, eating eggs regularly may be beneficial for those looking to maintain or even increase their testosterone levels naturally.