Morning vs. Evening Ejaculation: Urologist Explains Health Impacts

A Japanese urologist, Tetsuya Kubota, explained on his YouTube channel "Kubota Clinic Matsudo Goko / Urology, Internal Medicine, Dermatology, Cosmetic Dermatology" that moderate masturbation and regular, healthy sexual activity are beneficial for physical and mental health. However, the timing can influence the body's response.

Kubota explained the advantages of "morning" sexual activity:

Peak male hormone secretion: Morning is when male hormones (testosterone) are at their highest, typically 25% to 50% higher than in the evening. This can boost libido and improve erection quality.

Demonstration of healthy sexual function: Many men experience "morning erections," a natural physiological phenomenon during REM sleep, indicating healthy erectile function. However, as men age (especially over 45), the hormonal difference between morning and evening gradually diminishes.

Starting a vibrant day: Orgasm triggers the release of "happy hormones" like endorphins and serotonin in the brain, while reducing stress hormones (cortisol). This can boost spirits, reduce stress, and make one feel more energetic throughout the day.

Conversely, the advantages of preferring "evening" sexual activity include:

Relaxing the body and mind, aiding sleep: After ejaculation, the brain releases oxytocin (the "love hormone"), and prolactin levels in the body increase sharply, bringing a sense of satisfaction and physical fatigue, which helps to calm the nerves.

Improving sleep quality: Studies suggest that individuals who experience sexual climax before sleep tend to have deeper sleep that night, effectively alleviating insomnia and aiding in falling asleep.

More time and psychological readiness: After a full day's work in the evening, there is more ample time to engage in foreplay or create a romantic atmosphere with a partner, usually leading to higher psychological satisfaction.

Have you heard that "sperm quality differs between morning and evening"? Kubota stated that some research indicates morning sperm have better motility, while other studies suggest evening sperm have higher concentration and motility. He emphasized that there is currently no consensus in the medical community. Therefore, in daily life or during conception efforts, the "frequency" and "body's state" of ejaculation are far more important than the "time of day."

According to large studies, including those from Harvard University, men who ejaculate frequently or regularly have a lower risk of developing prostate cancer. For example, individuals who ejaculate more than 21 times a month have about a 31% lower risk of developing cancer compared to those who ejaculate 4 to 7 times a month. Additionally, experts speculate that ejaculation may help clear waste products or potential carcinogens from the prostate, reducing inflammation risk. Finally, Kubota concluded that most existing research indicates that moderate ejaculation has a positive impact on prostate health.

Kubota recommends maintaining sexual activity or masturbation at least once a week to effectively prevent age-related erectile dysfunction (ED) and advises against unnecessary abstinence. He suggests choosing the timing based on one's lifestyle and partner's condition, whether it's morning or evening. Most importantly, he stressed not to treat ejaculation as an obligation or pressure, but to engage in it in a relaxed, enjoyable state for better health.

Kubota emphasized that good sexual function is built on healthy daily habits, including sufficient sleep, a balanced diet, and moderate exercise.

The video's summary concluded that morning and evening ejaculations each have their advantages (morning brings vitality, evening aids sleep). As long as one maintains a moderate frequency at their own pace, naturally and enjoyably, it is the healthiest habit.