A prospective cohort study identified eight early life risk factors for childhood obesity in the UK. These factors included parental obesity, early adiposity rebound, excessive television viewing, catch-up growth, and short sleep duration. The study involved 8234 children, with 909 children in a subsample with additional data on early growth-related risk factors. Obesity was defined as a BMI ≥95th centile relative to UK reference data from 1990. The study found that parental obesity, early adiposity rebound, and excessive television viewing were independently associated with increased obesity risk. Other factors included catch-up growth, weight gain in the first year, birth weight, and short sleep duration. The study highlights the importance of early life factors in the development of obesity and suggests that interventions targeting these factors could be effective in preventing childhood obesity. The study also notes that some previously identified risk factors, such as breastfeeding, were not independently associated with obesity in the final model. The study's findings support the hypothesis that the early life environment plays a critical role in determining later obesity risk. The study's strengths include its large sample size, longitudinal design, and use of multivariable analysis. Limitations include the inability to analyze certain risk factors such as physical activity and parental control over feeding. The study contributes to the understanding of childhood obesity risk factors and suggests that future prevention strategies should focus on early life interventions.A prospective cohort study identified eight early life risk factors for childhood obesity in the UK. These factors included parental obesity, early adiposity rebound, excessive television viewing, catch-up growth, and short sleep duration. The study involved 8234 children, with 909 children in a subsample with additional data on early growth-related risk factors. Obesity was defined as a BMI ≥95th centile relative to UK reference data from 1990. The study found that parental obesity, early adiposity rebound, and excessive television viewing were independently associated with increased obesity risk. Other factors included catch-up growth, weight gain in the first year, birth weight, and short sleep duration. The study highlights the importance of early life factors in the development of obesity and suggests that interventions targeting these factors could be effective in preventing childhood obesity. The study also notes that some previously identified risk factors, such as breastfeeding, were not independently associated with obesity in the final model. The study's findings support the hypothesis that the early life environment plays a critical role in determining later obesity risk. The study's strengths include its large sample size, longitudinal design, and use of multivariable analysis. Limitations include the inability to analyze certain risk factors such as physical activity and parental control over feeding. The study contributes to the understanding of childhood obesity risk factors and suggests that future prevention strategies should focus on early life interventions.