Girls getting their first period early grow significantly taller than the previously thought amount of 6-8 centimetres, according to a study that followed nearly 800 women in Sweden from birth to adulthood, through puberty. Researchers found that the onset of menstruation at or before 12 years of age typically grew taller by almost 13 centimetres, whereas girls attaining puberty at or just over age 14 typically grew taller by three centimetres in height..
