Men usually stop growing between ages 18 and 20, although the exact age can vary from person to person. Growth generally ends when the growth plates in the bones close, which does not always happen at the same age for everyone.
Genetics play a major role in final height, accounting for about 80% of it, but other factors also affect growth. Good nutrition is especially important, since a healthy, nutrient-rich diet supports proper growth and development during childhood and adolescence.
Some chronic conditions, such as obesity, thyroid disorders, or hormonal imbalances, can affect bone age and interfere with normal growth. Poor sleep quality or not getting enough sleep can also limit growth potential during these important years.
Physical activity does not directly make someone taller, but it can improve bone density and support overall health. Healthy habits during the growing years can help a person reach their full genetic height potential.
If you have concerns about a child’s growth or development, it is best to see a pediatrician.