Why Hair Fall Increases After Weight Loss Or Dieting
Many people notice sudden hair fall a few weeks or months after losing weight. This can feel alarming, especially when weight loss was achieved through strict dieting or intense workout routines.
Hair fall after weight loss is common and usually temporary, but if ignored, it can lead to visible thinning and reduced hair density.
1. Sudden Calorie Restriction Shocks Hair Growth
Rapid weight loss often involves cutting calories drastically. Hair follicles are highly sensitive to energy deficiency. When the body senses stress, it shifts hair from the growth phase to the shedding phase. Medically, this condition is called telogen effluvium.
2. Protein Deficiency Weakens Hair Roots
Hair is made of keratin, a protein. Crash diets often lack adequate protein intake. As a result, hair becomes weak, thin, and prone to shedding. In simple terms, your body prioritises vital organs over hair growth.
3. Iron And Vitamin Deficiencies
Weight loss diets often lack iron, zinc, vitamin D, and B12. Low iron levels reduce oxygen supply to hair follicles, worsening hair fall after weight loss. This makes regrowth slow and unpredictable.
4. Hormonal Changes During Weight Loss
Rapid fat loss affects hormones like estrogen, thyroid hormones, and cortisol. Hormonal imbalance disrupts the hair cycle and contributes to hair thinning after dieting.
How To Control Hair Fall After Weight Loss
Treatments That Help With Hair Fall After Weight Loss
When To See A Dermatologist
If hair fall after weight loss lasts more than three months or leads to visible thinning, professional care is important. At Dr. Reshma Ahuja’s Clinic, we identify nutritional gaps and provide personalised treatments to restore healthy hair growth.
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