Hair loss is a very a common problem; in fact, it affects not only men but also women and children. While hair loss in men is commonly related to balding, other times, it can be a result of poor diet and lifestyle choice.The most common cause for hair loss, however,is a prolonged illness, such as typhoid or jaundice, which can result in sudden and excessive hair loss.In many cases, it could also be due to an imbalance in the hormones, for example, if your thyroid gland is not functioning properly, you may experience sudden hair loss. Hormonal changes during pregnancy can also result in hair loss in some women. Apart from these, hair loss is also a side effect of certain medicines.Fungal infections of the scalp can also be a cause for hair loss.
Cycles of growth :Our hair growth is identified to be following three phases during its life, namely anagen, catagen and telogen. Anagen is the phase that lasts from two to five years and this growth phase is terminated by extreme interruption between hair shaft and nourishing papilla. This interruption lasts only for a few days and is called the Catagen Phase. The next three months the hair rests and this period of resting is called Telogen Phase. After this resting period, the hair falls and in its place a new hair growth cycle begins.
Causes of Hair Loss : The primary cause of loss of hair lies in the genes, the genetic endowment and is irreversible. There is also loss of hair due to the Chemo therapy, treatment of infection by ingesting chemicals or drugs into ones biological systems. The other supplementary factors are stress, poor diet and personal hygiene, physical illness, environmental issues like pollution etc. Lets see each one of the causes in some more detail.
Genetics :We all carry genes from our parents in equal proportion. If anyone of our ancestors has had permanent hair loss it is carried forward to our lives also and hence irreversible. This is called Patterned Baldness, more pronounced in males and hence the common Male Patterned Baldness