November has officially arrived, meaning thousands of people around the world are once again attempting one of the internet's most unusual annual challenges.

No Nut November, commonly abbreviated to NNN, encourages participants to avoid ejaculation for the entire 30 days of November.

While the challenge originally gained popularity as an internet meme, it has since sparked serious discussions about whether abstaining from sexual activity and masturbation could have genuine health benefits.

Some supporters claim that avoiding ejaculation can increase testosterone, improve fertility and even boost energy levels.

But according to a medical expert, the reality is considerably more complicated, and some of the supposed benefits could actually work against your body.

Does No Nut November increase testosterone?

Urologist Dr Rena Malik has examined the science behind semen retention, including claims that avoiding ejaculation can significantly increase testosterone levels.

Speaking on her YouTube channel, Malik explained that there is surprisingly little scientific evidence supporting these claims.

She highlighted two small studies involving groups of 10 and 29 men that investigated changes in testosterone during periods of abstinence.

One study observed an increase in testosterone after three weeks without ejaculation, but Malik cautioned against interpreting this as evidence of a lasting hormonal benefit.

She suggested that the temporary increase could have been associated with participants anticipating the opportunity to ejaculate again.

According to Malik, any such increase would likely be short-lived rather than a sustained improvement caused by semen retention itself.

In other words, completing the challenge is unlikely to provide the significant testosterone boost sometimes promised online.

What happens to fertility and sperm quality?

Another popular claim is that abstaining from ejaculation for an extended period can improve sperm quality and increase fertility.

However, Malik explained that the opposite may happen when abstinence continues for too long.

Although a short period without ejaculation can increase sperm concentration and the total amount of semen produced, longer periods may negatively affect other important measures of sperm health.

Research has associated prolonged abstinence with increased sperm DNA fragmentation, reduced sperm movement and changes in sperm shape.

Malik highlighted that these changes can become more apparent after approximately five to seven days without ejaculation.

For couples attempting to conceive, regular ejaculation is generally preferable to prolonged abstinence, although the ideal timing depends on individual circumstances.

Does your body produce more semen?

There is one commonly discussed effect of No Nut November that has a stronger scientific basis.

Abstaining from ejaculation can increase semen volume, particularly over the first several days.

However, this does not mean the body continues storing an unlimited amount of semen throughout the month.

Sperm that are not ejaculated can eventually be broken down and reabsorbed by the body as part of its normal biological processes.

Some participants may also experience nocturnal emissions, commonly known as wet dreams, during extended periods without ejaculation.

These are normal, involuntary events and are not generally a cause for concern.

Is No Nut November actually good for you?

Despite the numerous claims circulating online, there is currently insufficient scientific evidence to suggest that avoiding ejaculation for 30 days produces significant long-term physical health benefits.

For most healthy adults, both masturbation and abstinence are generally considered normal and safe.

Some people may find that participating in the challenge helps them reflect on personal habits or exercise self-discipline, but those potential psychological benefits should not be confused with proven hormonal or reproductive improvements.

Ultimately, whether someone chooses to participate in No Nut November is a personal decision rather than a medical necessity.

And for anyone hoping the challenge will dramatically increase testosterone or improve fertility, the available research suggests those expectations should be approached with caution.

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