1. Childbirth : During pregnancy, most women may notice their hair seems fuller and do not fall out as usually. That's because the high levels of hormones that keep resting hairs from falling out as they normally would. But, after childbirth, when hormone levels return to normal, those strands fall out quickly in the first 6 months.This can mean a surprising amount of hair loss at one time. When your hormones are in balance again the hair will fall less.
2.The Pill and Other Medications : Hair loss can be a potential side effect of birth control pills. The hormones that suppress ovulation can cause hair to thin in some women, particularly those with a family history of hair loss. Sometimes hair loss begins when you stop taking the pill. Other drugs linked to hair loss include blood thinners and medicines that treat high blood pressure, heart disease, arthritis, and depression.
3.Thyroid Problems : The thyroid is a gland at the front of the neck. It produces hormones that regulate many processes throughout the body. If the gland makes too much or too little thyroid hormone, the hair growth cycle may falter. But hair loss is rarely the only sign of a thyroid problem. Other symptoms include weight gain or loss, very dry skin or eczema, sensitivity to cold or heat, and changes in heart rate.
4.PCOS : Women with polycystic ovary syndrome (PCOS) have a chronic hormonal imbalance. The body makes higher levels of male hormones than expected. This often causes extra hair to sprout on the face and body, while there is less hair on the scalp . PCOS can also lead to ovulation problems, acne, and weight gain. But sometimes thinning hair is the only sign.
5.Crash Diets : You may lose more than weight with a crash diet. People may notice hair loss 3-6 months after losing more than 15 pounds, but hair should regrow on its own with a healthy diet.If your diet is very low in protein or too high in vitamin A you will shed some locks.
6.Tight Hairstyles : Wearing cornrows or tight ponytails can irritate the scalp and cause hair to fall out. The same is true of using tight rollers. Let your hair down, and it should grow back normally. Long-term use of these styles can cause scarring of the scalp and permanent hair loss.
7.Cancer Treatment : Hair loss is an infamous side effect of two cancer treatments: chemo and radiation therapy. In their quest to kill cancer cells, both treatments can harm hair follicles, triggering dramatic hair loss. But the damage is almost always short-lived. Once the therapy is finished, hair usually grows back.
8.Extreme Stress : Extreme physical or emotional stress can cause a sudden shedding of one-half to three-quarters of the hair on your head. Examples include:
Serious illness or major surgery
Trauma involving blood loss
Severe emotional trauma
The shedding may last six to eight months.
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