Understanding Hair Growth Cycles And Hair Loss

Understanding Hair Growth Cycles And Hair Loss



Understanding Hair Growth Cycles and Hair Loss
We all lose a​ certain amount of​ hair each day anywhere from 50 to​ 100 to​ 125 hairs. True hair loss occurs when these hairs we​ lose Don't grow back,​ or​ when the​ amount of​ hair we​ lose each day exceeds this normal range.
Hair loss can occur as​ a​ result of​ medications,​ such as​ chemotherapy treatments or​ blood thinners,​ which can damage the​ telogen hairs,​ or​ stop the​ natural cell division that then produces weakened hair that is​ susceptible to​ breaking. High doses of​ vitamin a​ can also lead to​ hair loss as​ well. the​ most common type of​ hair loss,​ however,​ is​ where more and more hair follicles enter what is​ called the​ resting phase telogen phase in​ the​ hair growth cycle.
Overall,​ hair grows continuously from the​ scalp,​ but it​ moves away from the​ scalp in​ 3 phases. Hair is​ not all uniformly in​ one phase. Different parts of​ the​ scalp will be in​ different phases,​ so at​ any one time you​ should have hair follicles in​ all 3 stages. Generally,​ most 90% of​ the​ hair will be in​ the​ anagen phase,​ 10 to​ 14% of​ the​ hair will be in​ the​ telogen phase,​ and only 1 to​ 2% of​ hair in​ the​ catogen phase.
The first phase is​ the​ Anagen phase,​ which is​ the​ growth phase. This can last anywhere between 2 and 8 years. a​ shorter anagen phase will limit how long your hair can grow. Hair cells at​ the​ root divide rapidly,​ which lengthen the​ hair shaft.
In the​ next phase,​ the​ catagen phase,​ the​ outer root of​ the​ hair follicle shrinks and attaches to​ the​ root of​ the​ hair. Hair growth stops here. This phase lasts 1 to​ 2 weeks.
The telogen phase is​ the​ resting phase. This lasts from 5 to​ 6 weeks in​ normal hair. Hair doesnt grow in​ this phase,​ but it​ stays firmly rooted in​ the​ scalp as​ long as​ the​ follicle stays in​ a​ resting phase below it. New growth begins at​ the​ end of​ the​ resting phase,​ and this is​ when natural hair shedding will happen,​ as​ the​ new growth pushes the​ old hair out.
In male pattern baldness,​ more hairs enter the​ telogen phase. This effects of​ this are an increase in​ hair shedding. Hair gradually becomes thinner and shorter,​ and in​ the​ end,​ the​ hair follicles shut down.




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