A new study has identified age 29 as the optimal time to have a first child, linking it to better long-term health and financial outcomes. Researchers found that people who become parents in their early twenties tend to earn less, report worse physical and mental health, and achieve lower educational success compared to those who delay parenthood.
Key Findings on Parenthood Timing
The study, titled 'Congratulations, it’s a risk factor!', analysed data from 6,282 adults with biological children. It revealed that health and wealth improve the later someone has their first child, with benefits plateauing near age 30. Author Jordan MacDonald explained: 'The younger someone is when they become a parent, the more likely they are to experience long-term challenges, including not finishing high school, reporting poorer health, and having lower income across the lifespan.' These patterns were similar for both teen and young fathers and mothers.
Ideal Age Range Identified
Writing in the journal Plos One, the researchers stated: 'Based on the findings of the present study, the ideal age [to have your first child] is between 26 and 31. It is between these years that self-rated health and mental health, income and education appear to be stable.' The probability of living in a household earning at least 125,000 Canadian dollars (£67,000) peaked for individuals who had their first child around age 29.
Educational and Income Impacts
The analysis showed a strong link between the age of first-time parenthood and educational success. As the age increased, the likelihood of completing post-secondary education rose rapidly. Higher income also became more probable as people delayed having children, levelling off between ages 26 and 31. After age 29, the chance of reaching the top income bracket slowly declined.
Health and Life Satisfaction
Participants who became parents in their teens or early twenties reported worse physical health later in life, but this negative effect diminished for those who delayed parenthood, stabilising around age 26. Older first-time parents reported slightly better mental health, though life satisfaction did not vary significantly based on the age of becoming a parent.
Liminality Theory
The researchers suggest their findings support liminality theory, which posits that becoming a parent during a transitional life phase can stall personal development. This may explain why having a first child during key stages like leaving high school or moving out can leave individuals 'stuck' in that phase.
Not a Deterministic Outcome
MacDonald cautioned that the results do not mean teen or young parents cannot succeed. 'They mean that success may become much more difficult without support,' he said. 'Teen and young parents... are not “doomed to fail”. But they may face much greater barriers if the people and institutions around them do not offer support.'
Current Trends in Parenthood Age
Official statistics show the average age of first-time mothers in England and Wales is now 29.4. Projections from the Office for National Statistics indicate that women are likely to continue having babies later in life and having smaller families. Girls who turned 18 in 2025 are expected to have an average of one child per woman by age 35, compared to their mothers' generation who had one by age 31. They are projected to have 1.52 children during their lifetimes, down from 1.95 for their mothers and 2.04 for their grandmothers.
