| What's
New
Home
Introduction
More
Hair Facts and Hair Loss Basics
Diet,
Nutrition and Hair Loss
Natural
Hair Loss Remedies
Good
Grooming and Care
Black
Hair Basics
Hair
and Scalp Diseases
Women’s
Issues
Hair
Replacement and Restoration Techniques
Over
The Counter Treatments
Prescription
Drug Treatments
Summary
Resources
for Hair Care and Hair Loss Prevention
Selected
Articles
Other
Sites
|
Subscribe
To Our 5-Day Mini Course To Read About The Latest
Breakthroughs In Hair
Loss Research...
Click
Here
Introduction
The best start to preventing hair loss
is understanding the basics of hair: what it is, how it grows, what system
malfunctions can cause it to stop growing. And this web site will
cover the bases for you. Note that the contents here are not presented
from a medical practitioner, and that any and all dietary and medical planning
should be made under the guidance of your own medical and health practitioners.
This content only presents overviews of hair loss prevention research for
educational purposes and does not replace medical advice from a professional
physician.
Hair is the fastest growing tissue of the
body, made up of proteins called keratins. Every strand of hair is made
up of three layers: the inner layer or medulla (only present in thick hairs);
the middle layer or cortex, which determines the strength, texture, and
color of hair; and the cuticle, which protects the cortex. Hair grows from
roots, which are enclosed in follicles. Below this is a layer of skin called
the dermal papilla, which is fed by the bloodstream carrying nourishments
vital to the growth of hair. Only the roots of hair are actually alive,
while the visible part of hair is dead tissue, and therefore unable to
heal itself. It is vital then to take care of the scalp and body in order
to perpetuate hair growth and maintenance. Expensive treatments that claim
to treat the visible hair and nourish it therefore are usually no more
than bogus claims made to sell products.
Hormones called androgens, usually testosterone,
can cause hair follicles to shrink, causing thinning of hair or eventual
hair loss. Reportedly only bone marrow grows faster in our body than hair
does. The average scalp contains 100,000-150,000 hair follicles and hairs,
with 90% growing and 10% resting at any given time. Hair actually grows
in three stages: anagen, catagen, and telogen. The anagen phase is the
phase where hair is actively growing, and of course this phase is longer
for follicles in the scalp than anywhere else on your body, and lasts longer
for women than men. It is natural for follicles to atrophy and hair to
fall out, and this is called the catagen phase. This phase is only temporary,
and eventually the follicle enters the telogen phase where it is resting.
These are the 10% at rest mentioned above. Normal anagen phases last approximately
five years, with catagen phases lasting about three weeks, and telogen
phases lasting approximately 12 weeks. As you see it is natural to lose
some hair. Natural hair loss is considered to be in the range of 100 hairs
per day. It is not apparent to most people that hair is actually being
lost until more than 50% of a person’s hair is actually lost.
Next
Back
To Hair Loss Explained
|