Misconceptions - On Hair Loss Causes

• Wearing a hat causes hair loss.  There is nothing wrong with wearing a hat in the summer or a cap in the winter, and contrary to what many people believe, it does not restrict the circulation of blood to the scalp.  A key reason for poor blood circulation to the scalp is stress.
• Using hair products such as gel, hairspray or mousse will cause one to lose his hair.  While there are some harmful hairstyling products on the market, nowadays manufacturers are a lot more conscious of any potential damage caused by their products.  Furthermore, I have continued using hairstyling products during my hair regrowth process and there has been no negative impact.
• Hair loss is inherited from your mother's side of the family.  This is definitely one of the most popular hair loss myths out there, but there is no evidence to support this belief.  Research studies have shown that you can inherit hair loss from either parent.
• Cutting your hair short helps it grow back thicker.  Generally, the root of a hair strand is thicker than the tip.  Accordingly, the misconception exists that the entire hair strand will be as thick as the root if it is cut short and then grows out.  The truth is that the tip of the hair strand will be thinner than the root.  Subsequent to being cut short and returning to its original length, the hair strand is going to look the same as it previously did.
• Shampooing your hair frequently causes hair loss.  Studies have shown that if you reduce the number of times that you wash your hair, more will fall out each time than if you shampoo often.  Hair on your scalp is loosened from its roots as a result of everyday activities (e.g. combing your hair, rubbing your hair against a pillow while sleeping) and when hair is washed, it is not uncommon for a small amount to fall out.  If hair is not washed often, a greater number of loosened hairs will remain on the scalp and finally fall out when washed.
• Brushing your hair will improve circulation to the scalp and promote hair growth.  There is no evidence which shows that brushing your hair has any affect on circulation.  Circulation in the scalp is improved by reducing stress and following a sound exercise program.

Source: http://www.stoppinghairlossnow.com/myths.html