Breaking the Cycle: Obesity, Pregnancy, and the Intergenerational Risk We Can’t Ignore

Dr. Bharti Kalra, Consultant Gynecologist, Bharti Hospital, Karnal, India.

Rising obesity is increasing pregnancy risks and passing long-term metabolic disease from mother to child across generations.

Obesity has reached epidemic proportions worldwide, nearly tripling since 1975. In 2022, more than 390 million children and adolescents aged 5–19 were overweight, rising from 8% in 1990 to 20%. The burden is shared across sexes, affecting 19% of girls and 21% of boys. In adults, overweight is defined as BMI ≥25 kg/m² and obesity as ≥30 kg/m², yet among women of reproductive age, prevalence remains high—33% in the United States, 20% in the UK, and 15.5% in Denmark.

This matters deeply in pregnancy. Rising maternal BMI is strongly linked to gestational diabetes, hypertensive disorders, and delivery complications. The consequences extend far beyond pregnancy itself. Gestational diabetes and excessive gestational weight gain are now recognized as key drivers of obesity, diabetes, and cardiovascular disease in the next generation.

Evidence increasingly shows that the intrauterine environment “programs” long-term health. Epigenetic changes, inflammation, metabolic disruption, and altered fetal development may permanently influence offspring risk. Children exposed to maternal obesity are more likely to develop obesity themselves, continuing a cycle that often leads to earlier onset of chronic disease and premature mortality.

Emerging evidence also highlights the roles of stress, health behaviors, and social context, underscoring that obesity is not purely biological but is deeply shaped by the environment and lifestyle.

Breaking this intergenerational cycle requires long-term, evidence-based strategies. Ongoing follow-up of pregnancy lifestyle interventions is essential to understand whether improving maternal health can reshape outcomes for future generations.

(Reference: Luef BM, Jensen NH, Knorr S, Kristensen K, Overgaard M, Stentebjerg LL, Catalano PM, Möller S, Maindal HT, Jensen DM, Vinter CA. Study protocol for a 15-year follow-up of a randomized controlled trial on lifestyle intervention in pregnancy: assessing long-term effects on body composition, metabolic traits, and mental health in mothers and offspring. Trials. 2026 Jan 14.)