New Delhi: The age at which you first have sex may have a surprising impact on how you age later in life, according to a new study from researchers at Shandong University.
The study, published in May in the journal Healthcare and Rehabilitation, found that people genetically linked to an earlier sexual debut were more likely to show signs of poorer ageing later in life, including higher frailty, shorter lifespan and worse overall health outcomes.
“Our findings suggest that the timing of first sexual intercourse may be connected to ageing through multiple psychological, behavioural, and disease-related pathways,” first author Kaixian Wang said in a press release.
For the study, researchers analysed large-scale genetic data to identify DNA markers associated with the age people first had sex. They then examined whether those markers were linked to ageing-related health outcomes later in life.
Their conclusion: earlier sexual initiation may be linked to accelerated ageing through a complex web of mental health conditions, risky behaviours, chronic illnesses, and long-term stress.
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Researchers then explored why this link might exist.
To do that, they looked at 145 possible factors that could connect early sexual activity with ageing. Of those, 34 were found to play a meaningful role.
Among the strongest were ADHD, depressive traits described as “miserableness,” chronic obstructive pulmonary disease (COPD), and frailty itself.
The researchers also stressed that the study does not prove sex itself directly causes faster ageing. They noted that other factors in childhood may also shape both sexual behaviour and long-term health.
“Our studies highlight how early-life experiences may cluster with mental health challenges, chronic disease risks, and functional decline over time,” Wang said.
Still, the findings point to the importance of early mental health support, sexual health education and lifestyle interventions that may help reduce health risks later in life.
“Prevention and intervention across the life course may help reduce later health disadvantages and promote healthier ageing,” says corresponding author Long Sun. “Our findings further affirm the value of early sexual health education and broader support for adolescents who may be at higher risk.”