Fathers' preconception health may shape their child's future as much as mothers'

For decades, advice on pre-pregnancy health has focused almost entirely on women. Now, research suggests fathers' health before conception may be just as vital for their child's future. Scientists warn that overlooking men's lifestyle factors—from diet to mental health—could leave mothers unfairly burdened with responsibility for a child's long-term wellbeing.

Studies show a father's habits before conception can shape pregnancy outcomes and a child's development. Paternal drinking raises the risk of birth defects, while smoking and poor diet may alter sperm, affecting foetal growth. Research by Dr. Teperino even links a man's diet to higher obesity and diabetes risks in his children. Yet public health policies still rarely address preconception care for men.

Global sperm counts have dropped by over 50% since 1973, with quality influenced by factors across a man's life. Mental health also plays a role: children of fathers with depression face a higher risk of developing it themselves. Meanwhile, fathers who actively support partners during pregnancy help reduce maternal stress and encourage healthier behaviours. Experts argue that improving young men's health could benefit families for generations. Better education on preconception care and easier access to healthcare for men are seen as key steps. But so far, most research and policy continue to ignore the male role in early child development.

The evidence highlights a need to shift focus beyond mothers alone. Addressing fathers' health before conception could lead to better pregnancy outcomes and long-term child wellbeing. Without change, women may remain unfairly seen as the sole guardians of their children's future health.