At this age normally diet and lifestyle can be the factor behind hair loss. So if you find the serious hair fall issue then consultation is required with the doctor.

If everything is good, and hair loss is normal then you should take care of your diet. As diet is one of the most common factors for hair loss at this age usually.

So I believe that you must consider your diet with protein. As protein is the building block of the tissues in your body, including your hair. Make sure you are consuming enough proteins in your diet. The best sources of protein are milk, egg whites and fish.

You also need to eat foods high in omega-3 fatty acids - such as salmon and mackerel - two or three times a week.