[martingoodson]

"Conclusions: This meta-analysis confirmed that skipping breakfast is associated with overweight/obesity, and skipping breakfast increases the risk of overweight/obesity. The results of cohort studies and cross-sectional studies are consistent. There is no significant difference in these results among different ages, gender, regions, and economic conditions."

https://pubmed.ncbi.nlm.nih.gov/31918985/

[oarfish]

It seems rather obvious that skipping breakfast is not causally related to obesity, rather it maybe correlates with other behaviors that are.