Posts Tagged ‘MPB’

Do Women Get Patterned Hair Loss?

Thursday, December 30th, 2010

Yes. It could be referred to as female pattern baldness, patterned baldness, diffused baldness, female baldness, or even as male pattern baldness (MPB)

Thirteen percent (13%) of pre-menopausal women are thought to experience some symptoms of patterned baldness, this number climbs up to 75% of women experiencing patterned baldness after the age of 65. [13]   Hair loss is increasing in both men and women, men in their early twenties are now experiencing MPB.

In my personal experience, I see many women, including ones in their twenties and thirties with thin hair and bald spots. In many cases when a metabolic issue exists hair loss is more likely to occur.

In women, the hair loss progresses as a diffused thinning of hair all over the top areas and crown of the head (i.e. parietal region). [5] [13] In this case, this hair loss is either referred to as male-pattern baldness, or as female-pattern baldness. [13]

I have heard of women who were very effected emotionally when their physicians told them they had “male pattern baldness” (because her doctor viewed it is a male-hormone dependent condition).

If this indeed was pure a male hormone issue then why are women experiencing hair loss at younger ages and more often? More importantly, how are some able to stop it using diet and nutrition, lifestyle and topical treatments?

I believe the use of the term male pattern baldness to describe any female hair loss is inappropriate.

Edited: 12/29/2010

Who Gets MPB & How Common is it?

Wednesday, December 29th, 2010

Both men and women do.

AGA is very common, one study mentioned that AGA affected as many as 40% of adult men and women combined. [22] Another study mentioned that AGA affected up to 50% of white men 50 years of age or older [3] and it “affects up to 80% of males by the age of 80”. [20]

Thirteen percent (13%) of pre-menopausal women are thought to experience some symptoms of AGA, this number climbs up to 75% of women experiencing AGA after the age of 65. [13]   Hair loss is increasing in both men and women, men in their early twenties are now experiencing MPB.

According to wikipedia (as of 1/1/2011) “Incidence of pattern baldness varies from population to population based on genetic background, environmental factors do not seem to affect this type of baldness greatly. One large scale study in Maryborough, Victoria, Australia showed the prevalence of mid-frontal hair loss increases with age and affects 73.5% of men and 57% of woman aged 80 and over. According to Medem Medical Library’s website, male pattern baldness affects roughly 40 million men in the United States. Approximately 25 percent of men begin balding by age 20; two-thirds begin balding by age 60. There is a 4 in 7 chance of getting the baldness gene.”

This type hair loss follows a predictable pattern (in contrast to spots of baldness or alopecia totalis), most noticeably in men, thus it is commonly referred to as male-pattern baldness (MPB). To many, the term male pattern baldness (MPB) is interchangeable with androgenic alopecia (AGA).

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According to current understanding, women also experience AGA. [13] [20] [23] [26][28] In women, the hair loss progresses as a diffused thinning of hair all over the top areas and crown of the head (i.e. parietal region). [5] [13] In this case, this hair loss is either referred to as male-pattern baldness, or as female-pattern baldness. [13]

I do not use the term androgenic alopecia (AGA). Find why here: Should the Term “Androgenic Alopecia” Be Used?

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Should the Term “Androgenic Alopecia” Be Used? (Research History)

Wednesday, December 29th, 2010

About 60 years ago Hamilton made an important observation when he noticed that castrated men did not have AGA. He concluded that hair growth on the scalp was androgen-dependent.

Despite androgens causing hair loss in many men, androgens are actually crucial as they are responsible for the development of puberty; they also aid in, if not cause, male maturation, growth of muscles and the appearance of other sexual characteristics in young humans. [25]

Androgens, such as testosterone (T) and dihydrotestosterone (DHT), have been identified by researchers to be the main regulators of hair growth. Androgens contribute to the changing of vellus (tiny, un-pigmented) hairs into terminal (thicker) hair follicles. [18]

Paradoxically, androgens are also are often thought of as the main culprit behind male pattern baldness.

Androgens in the scalp of adults with androgen-dependent hair follicles seem to have two undesirable effects. The first being that they shorten the anagen phase (long growth phase). [6]

A study published in November 2002 further explained that the follicles experience a “transformation from long growth (anagen) and short rest (telogen) cycles, to long rest and short growth cycles.”  [3]

The second effect always accompanies the first and maybe the manifestation of it. This effect is manifested as the gradual changing of (thick) terminal hair follicles to (thinner) vellus hair (due to the reduction of the cellular hair matrix volume). This change in thickness has been referred to as a “progressive miniaturisation of the follicle.”[3] [5] [18] [23]

In summary, androgens shorten the long growth cycle (anagen phase) and cause follicles to enter into the resting cycle (telogen phase) faster and remain in that phase longer; this results in finer and finer hair. This process  is what we’ve identified as, or termed, AGA.

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