Environmental risk factors, including low birth weight, rapid weight gain in infancy, early pubic hair and puberty development, childhood obesity, excess adult weight, and
[hormone.org]
Weight gain, however, is not always present. Normal-weight women can also have PCOS.
[hormone.org]
Along with irregular periods, the first signs of PCOS may be the growth of facial and male-patterned body hair, thinning scalp hair, acne, and weight gain.
[hormone.org]