Climate has no effect on growth in humans, but seasons do! Boys and girls grow more in the spring and summer than in the autumn and winter. In addition, children produce more growth hormone during the first hours of sleep than during the day. Therefore, regular and sufficient sleep is important.
Growth of The Face
The most notable adolescent growth spurt in the face is an increase in the height of the lower jaw. This coincides with the peak in overall body height.
The upper and lower jaws have reached about 80% of their ultimate growth by age 6.
Girls – Reach their adult facial form approximately by age 14 or 15.
Boys – However, continue to show great change in the facial form between ages 15 and 20.
This is why men tend to show straighter profiles and stronger chins than women. Orthopedic orthodontic treatment is best performed well before facial maturation in order to achieve the best results.