What causes hair loss?
Believe it or not, we lose around 50-100 strand of hair every day. The number grows up to 250 when we wash our scalp. And this is considered normal.
But it seems a lot, right? Then why don’t we notice anything? To find the answer, let’s take a look at how our hair grows.
The growth cycle of the hair consists of three phases:
- Anagen – the growth phase ( 2-8 years)
- Catagen – transition phase ( 2-3 weeks during which the hair follicle shrinks)
- Telogen – resting phase ( 2-4 months during which the hair rest)
A hair follicle grows about 1 cm every month for two to eight years. Then it stops to grow. It shrinks, rests and falls. Then it gets replaced with another strand.
About 90% of the hair on our scalp is in the growth phase. So, hair loss occurs when something goes wrong with this cycle, or the hair follicle gets destroyed.
But what hinders the growth of our hair? Well, the reasons are complex, and they are still not fully understood. However, professionals link hair loss with the following factors:
- Genes. Hair loss tends to run in the family. If either one of your parents has hair issues, it’s likely that you’ll also experience hair loss.
- Hormonal changes and imbalances such as pregnancy, menopause, childbirth.
- Thyroid gland diseases.
- Stress, traumatic events, surgeries.
- Deficiency of iron and protein.
- Tight braids and ponytails.
- Curling iron.
- Hair dyes.
- Side effects of medication.
- Alopecia areata (an autoimmune disease that causes your body to attack the hair follicles)
- Trichotillomania (a mental disorder when a person compulsively tears his hair)