Losing 50-100 hairs per day is completely normal. But when you're finding clumps in your brush, hair on your pillow, or noticing your parting getting wider, something else is going on. Here are the eight most common causes — and what actually helps.
1. Hormonal Changes
Hormones are the #1 cause of hair loss. DHT (dihydrotestosterone) shrinks hair follicles over time, leading to thinner, shorter hairs until the follicle stops producing hair altogether.
What helps: DHT-blocking treatments — both pharmaceutical (finasteride) and natural (rosemary oil, saw palmetto). Rosemary oil has been clinically shown to inhibit the enzyme that produces DHT.
2. Stress (Telogen Effluvium)
Major stress — physical or emotional — can push large numbers of hair follicles into the resting phase simultaneously. Two to three months later, you notice sudden, dramatic shedding.
What helps: Good news — this type of hair loss is almost always temporary. Address the underlying stress, maintain a nutritious diet, and support scalp health with gentle massage and nourishing oils.
3. Nutritional Deficiencies
Your hair needs iron, zinc, biotin, vitamin D, protein, and omega-3 fatty acids to grow properly. Deficiency in any of these can cause thinning.
What helps: Get blood work done (specifically iron, ferritin, vitamin D, and zinc). Eat a balanced diet rich in protein, leafy greens, and healthy fats. Consider supplements if your levels are low.
4. Over-Styling and Heat Damage
Frequent heat styling, tight hairstyles (ponytails, braids), chemical treatments, and harsh brushing physically damage hair strands and follicles.
What helps: Reduce heat styling frequency. Use a heat protectant when you do. Let your hair air-dry when possible. Use oils like argan oil to protect against damage.
5. Thyroid Issues
Both hypothyroidism and hyperthyroidism can cause diffuse hair thinning. The hair loss is usually spread evenly across the scalp rather than in patches.
What helps: See a doctor and get your thyroid levels checked. Once treated with medication, hair typically regrows within 6-12 months.
6. Post-Pregnancy Shedding
During pregnancy, elevated oestrogen levels keep hairs in the growth phase. After delivery, those hormones drop, and all those "extra" hairs fall out at once — usually 3-6 months postpartum.
What helps: This resolves on its own within 6-12 months. Gentle scalp care, nutrient-rich oils, and a healthy diet can support faster recovery.
7. Autoimmune Conditions (Alopecia Areata)
Your immune system attacks hair follicles, causing smooth, round patches of hair loss. It can affect the scalp, beard, eyebrows, and body hair.
What helps: See a dermatologist. Treatments include corticosteroid injections, topical immunotherapy, and newer JAK inhibitor medications.
8. Medication Side Effects
Blood thinners, beta-blockers, antidepressants, birth control pills, and acne medications (like isotretinoin) can all cause hair thinning as a side effect.
What helps: Talk to your doctor about alternatives. Don't stop medication without medical advice.
What Can You Do Right Now?
- Rule out medical causes — get blood work done (iron, thyroid, vitamin D)
- Be gentle with your hair — reduce heat, avoid tight styles, use a silk pillowcase
- Nourish your scalp — regular scalp massage with rosemary oil improves blood flow and supports follicle health
- Be patient — hair grows about 1cm per month. Whatever treatment you choose, give it at least 3-6 months
