Infant fatness peaks between 4 and 9 months of age at about 25 percent before it begins a long slow decline. This period of baby fat thinning leads to a stage in childhood when most humans have the lowest body fat percentage they will have in their lives, unless of course you're one of the not-so-lucky ones.

Can a 6 month old be overweight?

Obesity can be detected in infants as young as 6 months, according to a new study. Obesity can be detected in infants as young as 6 months, according to a new study by researchers at the University of Texas Medical Branch at Galveston.

Why is my 2 month old so chunky?

Babies are meant to gain quickly

Babies store some of that fat under their skin because their developing bodies and brain need quick hits of energy all the time. Your baby might have some body rolls or big, soft cheeks. Don't worry — this kind of “fat” is normal and healthy for your baby.