Healthy hair often reflects overall well-being. If you’re noticing excess hair on your pillow, comb, or bathroom floor, it may indicate an underlying issue. Hair fall can have many causes, and identifying the real reason is the first step toward effective treatment.
Let’s explore the common factors that contribute to hair loss and understand what your body may be trying to tell you.
Genetics and Hair Fall
One of the most common causes of hair loss is genetics. Hereditary hair loss, also known as androgenetic alopecia, affects both men and women. It is influenced by multiple genes that determine how hair follicles behave over time.
Humans carry 23 pairs of chromosomes that determine physical traits. The X chromosome carries the androgen receptor (AR) gene, which plays a role in hair follicle sensitivity to hormones. Increased activity of these receptors shortens the hair growth cycle and weakens hair strands.
Although the X chromosome comes from the mother, recent research shows that hereditary hair loss is influenced by many genes, not just one. In fact, most individuals with hair loss have a family history on either side.
Lifestyle Plays a Major Role
Genetics is not the only factor. Daily habits and lifestyle choices greatly influence hair health.
You Are What You Eat
A diet high in refined carbohydrates and sugar can disrupt hormonal balance. Foods with a high glycaemic index may raise insulin and androgen levels, which negatively affect hair follicles.
Protein deficiency is another major cause. When protein intake is low, the body prioritizes vital organs and limits hair growth, leading to shedding after a few months. Including protein-rich and mineral-dense foods such as pulses, eggs, fish, nuts, seeds, and iron-rich foods is essential.
Weight and Hormonal Imbalance
A sedentary lifestyle and excess body weight can disturb hormonal balance. Obesity puts pressure on thyroid and insulin regulation, leading to metabolic imbalance. This chain reaction may contribute to hair thinning.
Weight-related conditions can also cause long-term medication use, which may further affect hair growth.
Similarly, rapid weight loss or bariatric surgery may result in nutritional deficiencies, especially zinc and copper, making hair dry, brittle, and prone to breakage.
Scalp Conditions and Skin Health
Your scalp health directly impacts hair growth. Conditions such as seborrheic dermatitis cause inflammation, itching, dandruff, and scaling, all of which weaken hair roots and increase shedding.
Steroid Use and Hair Loss
Some individuals use steroids to build muscle or improve performance. While these substances may increase strength, they can severely damage hair health.
Steroids raise testosterone and its byproduct dihydrotestosterone (DHT), which binds to hair follicles and causes them to shrink. This shortens the growth phase and leads to thinning and early hair loss, even in people without a genetic predisposition.
Smoking and Hair Health
Smoking affects nearly every organ, including the scalp. Nicotine causes blood vessels to narrow, reducing oxygen and nutrient supply to hair follicles. Poor circulation weakens hair roots, slows growth, and damages hair structure over time.
Quitting smoking significantly improves scalp circulation and overall hair health.
Stress and Hair Loss
Chronic stress disrupts hormonal balance by increasing cortisol levels. This can trigger several types of hair loss:
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Telogen effluvium: pushes hair into a resting phase, leading to excessive shedding
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Trichotillomania: stress-induced urge to pull hair
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Alopecia areata: autoimmune reaction targeting hair follicles
Managing stress through meditation, exercise, breathing techniques, and healthy routines plays a vital role in preventing hair fall.
Medical Conditions and Medications
Several medical conditions can contribute to hair loss, including:
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Pregnancy and post-delivery changes
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Menopause
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Polycystic ovary syndrome (PCOS)
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Thyroid disorders
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Nutritional deficiencies
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Eating disorders
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Cancer and its treatments
Certain medications may also cause hair fall, such as:
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Blood thinners
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Acne medications
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Antidepressants
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Beta blockers
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Cholesterol-lowering drugs
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High-dose vitamin A
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Anabolic steroids
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Oral contraceptive pills
If hair fall begins after starting medication, consult your doctor before making any changes.
Handle Your Hair with Care
Sometimes, daily hair habits are the main reason behind damage. Common mistakes include:
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Excessive shampooing
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Use of harsh chemical products
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Frequent coloring or bleaching
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Rough towel drying
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Combing wet hair
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Excessive heat styling
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Tight hairstyles
Gentle hair care and minimal chemical exposure can greatly reduce breakage.
Testing Helps Identify the Root Cause
Your body often gives warning signs long before serious issues develop. Instead of ignoring them, early testing helps identify the actual cause behind hair fall.
Health screening profiles designed for hair fall evaluation assess multiple parameters related to hormones, nutrition, and metabolism. These tests help pinpoint deficiencies and imbalances so treatment can be targeted and effective.