How come my actual malnutritioned friend is still taller thanhis dad by 5 inches and his height is near the population average of 5'8.5 inches?

[horizontallytall]

My friend has actual 6 inches wrist i measured both ours and his i had 7.5 inches ,this nigga eats like less than 1500 calories a day, i have shared room with him for last 3 months and weights 55 kg (120 lbs).

 

[mike21]

My friend has actual 6 inches wrist i measured both ours and his i had 7.5 inches ,this nigga eats like less than 1500 calories a day, i have shared room with him for last 3 months and weights 55 kg (120 lbs).

Genetics

 

[hello12344]

His mom prolly around 5’5 then.

My parents are both around 5’5 and I’m about his height.