Asian men generally have less body hair mainly because of genes.
We have a common genetic trait passed down from our ancestors that makes body hair sparser.
It’s not that we have less male hormones—our hair follicles just don’t respond as strongly to them.
Also, East Asia has a warm and humid climate, so less body hair helps with cooling down and staying clean.
Plus, our body hair is usually finer and lighter in color, so it looks even less noticeable.