Hair falling out can be alarming. While it’s normal to lose around 50–100 strands a day, noticeable thinning or sudden shedding may point to underlying health issues. Understanding the possible causes can help you take action early and protect both your hair and overall well-being.

1. Nutrient Deficiencies
One of the most common reasons for hair loss is a lack of essential nutrients. Your hair follicles need vitamins and minerals like iron, zinc, vitamin D, and biotin to grow properly. When your body doesn’t get enough of these nutrients, it prioritizes vital organs over hair growth. This can lead to excessive shedding, brittle strands, or slow regrowth. People with restrictive diets or poor nutrition are especially at risk.

2. Hormonal Imbalances
Hormones play a major role in regulating hair growth. Conditions like thyroid disorders, polycystic ovary syndrome (PCOS), or menopause can disrupt this balance. For example, an underactive or overactive thyroid can cause hair to become thin, dry, and prone to falling out. Hormonal shifts after pregnancy or stopping birth control can also trigger temporary hair loss.

3. Stress and Emotional Strain
Physical or emotional stress can push hair follicles into a resting phase, a condition known as telogen effluvium. This often happens after major life events such as illness, surgery, or emotional trauma. Hair may start falling out in clumps a few months after the stressful event. The good news is that this type of hair loss is usually temporary once the body recovers.

4. Scalp and Skin Conditions
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