Here’s How Sex and Intimacy Help You Live Longer, says Molly Maloof, M.D.

1. It Maintains Quality of Life

Research shows that sexual health can improve your quality of life (no big surprise there!) — even if you’re older in age. As a result, it can increase your lifespan, too. 

In fact, 62.2 percent of men and 42.8 percent of women reported that sexual health was highly important to quality of life in a 2016 study of 3,515 adults in the Journal of Sexual Medicine. And, people in excellent health had higher satisfaction with their sex lives than those who had fair or poor health. Based on these results, the study authors note that sexual health screenings should be a routine part of physician visits—so if your doc doesn’t bring it up, make sure you do.

Meanwhile, those ages 65 and older who said their sexual relationship was “sufficient” reported better quality of life and lower incidence of sexual dysfunction than those who described their relationship as “moderate” or “poor,” according to a 2023 study. This was also true for those who considered themselves attractive and had sex frequently with their partner or spouse. 

What do these studies suggest? When your sex life is better, your overall outlook on life may improve too.

2. It Contributes to Satisfying Relationships & Mental Health

Sexual activity may also contribute to longevity by making your relationships more stable and satisfying—and by boosting your mental health.

Sexual satisfaction is a main factor in predicting relationship satisfaction in both men and women, according to a small-scale study, found in a 2023 issue of the International Journal of Environmental Research and Public Health. For women, interpersonal closeness was also important (measured by statements like “I always consider my partner when making important decisions” or “I miss my partner when we are apart”). 

In addition, one 2019 study revealed that frequent, longer lasting bouts of sex was associated with higher sexual satisfaction, which in turn, lead to stronger relationships. This was true for all relationship types, including same-sex, mixed-sex, and gender-diverse relationships. 

Beyond its physical implications, sexual activity and intimacy can also contribute to mental health, something that’s increasingly understood to influence longevity. 

Researchers examined the impact of sexual activity (or lack thereof) in a study published in a 2021 issue of the Journal of Sexual Medicine. They found that people who didn’t have sex during the COVID-19-related lockdown had a 27 percent higher risk of developing anxiety and a 34 percent higher chance of depression compared to those who did.

3. It May Reduce the Risk of Cancer & Heart Disease

A great sex life can also keep your prostate—and other parts of your body—healthy. 

Scientists monitored the frequency of orgasms in nearly 32,000 men over an 18-year period in a 2016 study published in European Urology. Their findings suggested that a higher frequency of orgasms was associated with a reduced risk of developing prostate cancer later in life. 

More specifically, men (both in their 20s and 40s) who reported 21 or more orgasms per month had about 20 percent lower risk of developing prostate cancer compared to those who ejaculated four to seven times per month.

What’s more? Engaging in a vibrant sexual life also seems to benefit heart health, even in those with heart disease, per a study from a 2022 issue of the European Journal of Preventive Cardiology. 

Heart attack patients who reported having sex at least once per week had a slightly lower risk of dying from heart disease (though more research is needed to determine if that lowered risk is statistically significant) and a more notable 44 percent lower risk of dying from non-heart disease causes—compared to those who had sex less. This is even after researchers adjusted for additional factors, including age, gender, partner status, and smoking.

4. It Can Boost Your Immune System 

Research suggests sex can support your immune system, as it offers a shield against illnesses and bolsters your resilience to viruses.

In a study, found in a 2021 issue of Fertility and Sterility, researchers assigned 16,000 participants to one of two groups: those who reported having sex more than three times per month and those who reported having sex less than three times per month. They found that 76.6 percent of those in the first group did not get infected with COVID-19 over the course of four months—and even those who did get infected tended to have milder cases than those in the second group, where nearly half of the group got infected.

These findings suggest that as your sexual activity increases, your immune system may be better equipped to combat pathogens. But of course, sexual activity alone can’t prevent infectious disease, so be sure to take all appropriate measures to avoid infections like COVID-19—particularly if you’re at high risk for serious disease.

5. It May Independently Extend Your Lifespan

While factors like quality of life, a strong immune system, and lowered risk of cancer may all contribute to your longevity, research shows that sex alone may be able to extend your lifespan. 

For instance, the findings from a study—found in a 2022 issue of the Journal of Applied Gerontology—showed that sexual well-being was positively associated with longevity in those who perceived sexuality as important to them.

Although research suggests your desire to have sex may begin to decline as you get older, plenty of men and women continue to have sex semi-regularly as they enter those later decades of life. Among those aged 80 and older, 19 percent of men and 32 percent of women reported having sex frequently (which is described as twice a month or more), according to a study from a 2015 edition of Archives of Sexual Behavior.