Lack of Leg Hair

(male)
Hey guys im hoping you can help me. I’m 18 i have a problem, now i dont know why i dont have hair on my legs, 1 could it be becuase i dont eat the right food, 2 i dont excersie enough or is it just that my DHT level is low, and why would it be low? i have bvery little hair, only around my ankles not alot but a little, over the month of June last week i was on Vacation, i noticd that i had a little more hair growing then it stopped am i imagining this or is there something wrong

This is a maturing process and body hair increases as one ages. At 18, you may be on the left of the bell curve, which means waiting it out. Leg hair increases in the 20s in most men.