Library.

“The Bogalusa Heart Study was a long-term study that followed children's cardiovascular health into adulthood and found evidence that cardiovascular disease can begin in childhood.”

The evidence strongly supports this description of the Bogalusa Heart Study. It was a long-running longitudinal study that followed children into adulthood, and its autopsy and follow-up findings helped show that atherosclerotic cardiovascular disease processes can start in childhood. The wording is appropriately cautious because it refers to evidence of early disease development, not typical childhood heart attacks.

“About 16,000 children participated in the Bogalusa Heart Study over about 40 years.”

The evidence does not support the claim as stated. Reliable sources consistently report more than 12,000 children in the Bogalusa Heart Study, while the figure above 16,000 refers to total participants overall. The study also spans roughly 50 years since 1973, although some older descriptions referred to nearly 40 years of follow-up.

“In the Bogalusa Heart Study, about 25% of participants reached a healthy weight as adults and about 75% remained overweight or obese.”

The evidence does not support the claimed 25%/75% adult weight split in the Bogalusa Heart Study. Cohort-wide figures cited in the underlying literature are far lower than 75% overweight/obese in adulthood, including about 42% in one young-adult analysis and 57.7% overweight in another follow-up measure. The claim appears to misread subgroup tracking results as if they described all participants.