There are many reasons for hair loss but 90% of all cases in men are due to a condition called "androgenetic alopecia." This is commonly referred to as "male pattern baldness."

You may loose 80 to 100 strands of hair per day. But this hair is not dead as all the hair that falls gets replaced with new growing hair. The hair goes through a generation, growth and fall cycle which continues again with generation of new hair. You do not become bald because you are loosing more hair, you will become bald when the lost hair is not replaced with new hair.