Male Maturity Shaped by Early Nutrition; Differences Between the Sexes Affected by Environment During First Six Months of Life, Northwestern University Study

ScienceDaily (Sep. 13, 2010) — It seems the old nature versus nurture debate can’t be won. But a new Northwestern University study of men in the Philippines makes a strong case for nurture’s role in male to female differences -- suggesting that rapid weight gain in the first six months of life predicts earlier puberty for boys.