Braids and weaves: Braids and weaves can make the hair thin and create hair loss that is known as central centrifugal cicatricial alopecia. This type of hair loss occurs at the crown and spreads. The problem is the tight strain and tension that is placed upon the scalp and hair with braids and weaves creating scarring. Unfortunately, the only viable solution for this type of hair loss is a hair transplant which is not always an option since the potential donor sites may be impacted as well. The scalp has been scarred so hair can not be stimulated to grow by taking medication.
The hairline referred to as "edges" which is the hair located closest to the ears, forehead, and neck will break off from wearing braids. Braids constantly and consistently pulls at the root of hair that "edges" are very sensitive too being pulled and stressed all the time. For ideas regarding new hairstyles check out hairblogs or www.youtube.com for different hairstyles. This website features tutorials of females showing the step by step process of different hairstyles. The tutorial video includes females with relaxed, unrelaxed, straight, short, long, and every other type of hair texture you can imagine.
FYI: Wearing braided hairstyles, such as Stevie Wonder, that pull back from the forehead on a daily basis over an extended period of time will cause the front hairline to recede. The style is tightly pulling the hair back frequently without interruption which will have negative consequences for the hair.
Ponytails: That old convenient ponytail - when you're having a bad hair day what do we always do? We throw our hair in a ponytail. Wearing a ponytail is fine but the problem begins when wearing this hairstyle (practically) everyday since it is pulling in one direction with regularity. Over times, years or several months for some, the hair line from the forehead will greatly recede. It is best to wear a variety of hairstyles to eliminate this potential problem.
Hereditary: Yep, just blame your parents. Loosing hair may be inherited from either your mother or father which is known as androgenetic alopecia. This type of hair loss occurs in the middle of the hair where lots of women usually places a part. Androgenetic alopecia can occur in teens as well. Minoxidil, a topical medication, is usually prescribed for this type of hair loses.
The following link will direct you to the website of American Academy of Dermatology that has a lot more information about the types of hair loss, causes, symptoms, and treatment.
For much more information about androgenetic alopecia click this link.