Is hair loss common in young men?

The most common cause of hair loss is a hereditary condition called male-pattern baldness or female-pattern baldness. It usually occurs gradually with aging and in predictable patterns — a receding hairline and bald spots in men and thinning hair in women.

if its genetic then yes
other causes,
stress
overworked
lack of sleep

It isn't common in Young men at all. If that occurs in young age (20 - 35 years old) regardless of man or woman, it is due to a family genes that are vulnerable to DHT, which makes a hair fall out.

The most common cause of hair loss is a hereditary condition called male-pattern baldness or female-pattern baldness. It usually occurs gradually with aging and in predictable patterns — a receding hairline and bald spots in men and thinning hair in women. Hormonal changes and medical conditions.

Ones with certain genes, yes. Often male pattern baldness starts right after puberty.

Depending on your genetics and environmental factors like food,stress,sleep and your job the risk of premature hair loss can greatly increase.Depending on what you think "young " means(it could be 17 or 30 years old) but in general I believe it is not common.

It can be.

Not matter how many times you ask this with all of your troll accounts, you are still a stupid troll. Reported

Possibly not