What cause the men lost heir in the head?

Answer 1

Several things can be factors.

There can be skin disease or even chemotherapy treatment for cancer!

In most cases it is a combination of testosterone levels and genetic factors.

The genes are usually passed on by your mother from her father.

If your Grandad has lots of hair, you should be fine, if he is bald - go buy a hat!

Remember, as an indicator of high testosterone levels, bald is sexy!