What is the Prevalence of Female Hair Loss around the World?
In comparison to many other medical conditions, hair loss isn't exactly harmful and therefore isn't recorded as diligently in many under-developed or developing countries. However there are reliable statistics for female hair loss in three areas, all lying in fairly different positions around the world: the United States, the United Kingdom, and Australia.
Women can lose hair for a number of reasons. However, the majority of all female hair loss is caused by a genetic mutation, resulting in what is most commonly known as female pattern baldness. In women, this causes a general thinning of hair on the head rather than the characteristic receding hairline of male pattern baldness.
Female Pattern Baldness in the United States
Recent findings have shown 1 in 4 women (or 25%) in America are affected with FPB. Approximately 40% of women will show some thinning of scalp hair by age 40. However, over 80% of women are at risk for developing it after age 60, when estrogen production is at a minimum.
Female Pattern Baldness in the United Kingdom
Because many Americans have at least some ancestry associated with the British Isles (England, Ireland, and Scotland), it makes sense that a similar population of women in the United Kingdom would exhibit FPB in comparison to American women. British research has shown that at least 13% of women experience some hair loss by age 40 while as many as 75% experience it after age 65.
Female Pattern Baldness in Australia
Many Australians are also descendents of Europe, lending to their similar incidence of female pattern baldness compared to the United States. Approximately 64% of Australian women experience some hair loss between age 20 and 80.
Other Things Which Cause Hair Loss in Women
Anything that causes a nutritional imbalance within the body can cause hair loss. This is particularly common in women giving birth and is therefore likely experienced by child-bearing women in all cultures. Giving birth causes hormone levels to fluctuate wildly and the immune system to jump into action. The stress from these changes uses a lot of energy. A decrease in available protein affects hair growth especially. (Hairs are essentially strands of protein).
Although the statistics are not available, it would be expected that women in under-developed countries would be more susceptible to hair loss due to lack of protein. Sources of protein are usually the most expensive and difficult to obtain, and are therefore often lacking in the diet of these countries. Infection with the fungus most commonly known as Ringworm can also cause hair loss. It would be expected that this form of hair loss would be more prevalent in areas of the world where either hygiene or the use of anti-fungals are at a minimum. Female hair loss is a very natural process and can be treated naturally in most cases. Due to the number of natural treatments for hair loss in many cultures, it is assumed that female hair loss is likely a world-wide problem.
http://www.webmd.com/skin-problems-and-treatments/hair-loss/hair-loss-medref http://www.bbc.co.uk/health/womens_health/body_hairloss.shtml http://www.nature.com/jidsp/journal/v10/n3/full/5640200a.html