Hair Fall Home Remedies and Diet: What the Evidence Actually Shows

"Most hair fall is not solved in the bathroom. Oils can protect the hair you have, but shedding usually starts inside: low ferritin, an underactive thyroid, too little protein. Get the blood test first, fix the plate second, and only then decide whether an oil or a supplement is worth adding." - Dt. Trishala Goswami, MSc Clinical Nutritionist, Diabetes Educator

Dt. Trishala Goswami, MSc Clinical Nutritionist · Diabetes Educator · Certified Nutrigenomics Specialist · Last Updated: October 2026

The short answer: losing 50 to 100 hairs a day is normal. Heavier hair fall usually has a cause you can find: a recent illness, stress or crash diet, low iron, thyroid disease, PCOS, pregnancy or inherited pattern hair loss. Fix the cause and eat enough protein and iron first. Of the popular hair fall home remedies, only rosemary oil and amla syrup have been tested in pattern hair loss, one small trial each.

No oil will help much if the real driver is low ferritin, an underactive thyroid or a crash diet three months ago. So start with the cause.

How much hair fall is normal?

The American Academy of Dermatology (AAD) and the NHS both put normal shedding at 50 to 100 hairs a day.

Tell two patterns apart:

• Shedding: more hair than usual falling from all over the scalp. Your parting looks normal, but your ponytail feels thinner.
• Thinning: fewer, finer hairs in one area, typically a widening parting in women or a receding hairline and crown in men.

Hair fall reasons in females and males

Telogen effluvium: shedding after a shock to the system

Telogen effluvium is the medical name for heavy, temporary shedding. The AAD lists common triggers: losing 20 pounds (about 9 kg) or more, giving birth, high fever, surgery, recovering from an illness, high stress and stopping birth control pills. A review in American Family Physician adds severe infection, malnutrition, thyroid disorders and some medicines.

Hair falls out about three to five months after the trigger, so a January fever may show up in your comb in April. The same review says it usually resolves within two to six months, and the AAD says most people regain fullness within six to nine months.

Crash diets and low protein

A review in Dermatology Practical & Conceptual (Guo and Katta, 2017) notes that sudden weight loss or reduced protein intake can trigger telogen effluvium. Juice cleanses and cutting out dal and dahi both qualify.

Female pattern hair loss

The AAD calls female pattern hair loss the most common cause of hair loss in women. It is hereditary, usually starts in midlife, and the typical early sign is a widening part. No food or oil reverses it, and treatment works best when started early, so take this one to a dermatologist.

Thyroid disease

The NHS lists "dry skin, dry hair or hair loss" among the symptoms of an underactive thyroid. The British Thyroid Foundation explains that severe, prolonged thyroid disease causes diffuse thinning that appears several months after the problem starts, and that hair usually regrows over several months once treatment works. If you take levothyroxine, speak to your doctor before changing anything: the British Thyroid Foundation says shedding that follows the start of treatment usually reflects the earlier thyroid disease, and stopping treatment can make hair loss worse.

PCOS

The NHS lists both excess hair growth and hair loss among PCOS symptoms, alongside irregular periods and acne. Androgen-driven thinning needs its own plan, covered in our guide to PCOS hair loss and nutrition. Our free PCOS symptom score can help you decide whether to ask your gynaecologist.

Iron deficiency and low ferritin

The NHS lists hair loss as a symptom of iron deficiency anaemia, and names heavy periods and pregnancy as very common causes. For low iron stores without anaemia, a 2019 review in Dermatology and Therapy (Almohanna and colleagues) found that studies used ferritin cut-offs from 15 to 70 µg/L, and that evidence for iron treatment in telogen effluvium is still insufficient, although most authors prescribe iron below about 40 µg/L (the same as 40 ng/mL). Treatment is your doctor's call. Our guide to iron deficiency in Indian women explains ferritin versus haemoglobin.

Vitamin D

The same review found lower vitamin D in people with alopecia areata (patchy hair loss), but contradictory data for female pattern hair loss and telogen effluvium. Most authors supplement only a confirmed deficiency, so test first. See why vitamin D supplements alone often fall short in India.

After pregnancy

Postpartum shedding usually peaks about four months after birth, according to the AAD. It is a form of telogen effluvium, not true hair loss, and most women regain normal fullness by their child's first birthday.

What your doctor may test

The American Family Physician review says no routine tests are needed for everyone. Testing follows your history and examination. Drawing on the reviews cited here, it may include:

Tell your doctor about biotin first. The British Thyroid Foundation warns that mega doses of biotin can give false TSH, FT4 and FT3 results, and cites American Thyroid Association advice to stop biotin at least a couple of days before blood tests.

Food for hair growth: the hair fall diet that matters

A hair fall diet will not regrow hair lost to genetics. What it can do is fix two common, reversible drivers: too little protein and too little iron.

Protein. ICMR-NIN's 2020 nutrient requirements set the protein RDA for healthy Indian adults at 0.83 g per kg of body weight a day, rising to 1 g per kg for people on a cereal-based diet with lower-quality protein. So a 55 kg woman on a mostly roti and rice diet needs about 55 g a day.

Iron. The same document sets the iron RDA at 29 mg a day for adult women and 19 mg for men. The NHS lists beans such as kidney beans and chickpeas, nuts, dried fruit such as apricots and fortified breakfast cereals among good sources, alongside red meat and liver.

Absorption. A classic study by Hallberg and colleagues found that phytates in grains strongly inhibit iron absorption and that vitamin C significantly counteracts this. A study in Gut (Disler and colleagues, 1975) found that tea with a meal inhibits absorption of plant iron, and may contribute to iron deficiency on mostly vegetarian diets.

An Indian protein and iron plate

1. Protein on every plate. A full katori of dal, rajma, chole or sprouts, plus curd, paneer, tofu, eggs, fish or chicken.
2. A katori of leafy greens or sabzi. Palak, methi, sarson, bathua or any seasonal vegetable.
3. Vitamin C on the same plate. Nimbu squeezed over dal, kachumber with shimla mirch, or a santra or mosambi. Citrus fruit and peppers are among the vitamin C sources the NHS lists.
4. One to two rotis or a small katori of rice.
5. Chai and coffee between meals, not with them.

For portions and more options, see high-protein vegetarian foods in India and our wider list of best foods for skin and hair.

Living abroad? Tinned chickpeas, red lentils, firm tofu, eggs and fortified cereals are in most UK, US, Canadian and Australian supermarkets. Methi, curry leaves, bathua and frozen amla are easier to find at Indian grocers.

Vitamins for hair fall: where the evidence is weak

Biotin

Biotin is heavily marketed but weak on evidence. Guo and Katta state that no clinical trials have shown biotin reduces hair loss in people without a deficiency, and the 2019 review found no evidence-based data that biotin promotes hair growth.

The bigger risk is your lab report. The US FDA has reported that biotin can cause falsely low troponin results, the test used to diagnose a heart attack, and the 2019 review cites an FDA report of a patient death after such a result.

Zinc, selenium and vitamin A: more is not better

• Zinc. Hair loss is a sign of established zinc deficiency, and hair regrows when it is corrected. But the 2019 review does not recommend routine zinc screening for telogen effluvium or pattern hair loss, and Guo and Katta note that excess zinc can cause stomach upset and interfere with iron.
• Selenium. Excess selenium is well documented to cause hair loss. The 2019 review describes a liquid supplement that contained 200 times its labelled selenium, and most people who took it lost hair. Some hair supplements contain selenium, so read the label.
• Vitamin A. Both reviews link excess vitamin A to hair loss, so avoid stacking multivitamins with "hair, skin and nails" tablets.

The safe pattern: test, and correct a proven deficiency under medical guidance. Do not start high-dose iron on your own either. The NHS notes that iron supplements above 20 mg can cause constipation, nausea and stomach pain, and very high doses can be fatal, especially for children.

Hair fall home remedies, honestly rated

Onion juice

The study usually quoted, in the Journal of Dermatology (Sharquie and Al-Obaidi, 2002), included 38 people with patchy alopecia areata. Of 23 who applied crude onion juice twice daily, 20 had regrowth by six weeks, while 2 of 15 who used tap water had regrowth at eight weeks. It was small, in a different condition from everyday hair fall, and has not been confirmed by larger trials.

Rosemary oil

The trial behind the rosemary trend, in Skinmed (Panahi and colleagues, 2015), gave 100 people with androgenetic alopecia either rosemary oil or minoxidil 2% for six months. Neither group improved at three months. Both had a significant increase in hair count at six months, with no significant difference between them, and scalp itching was more common with minoxidil. There was no placebo group, and it is one trial. It is reasonable to try if you can wait six months, but it does not replace a dermatologist's plan. Dilute essential oils in a carrier oil and stop if your scalp itches or burns.

Coconut oil

The often-cited Journal of Cosmetic Science study (Rele and Mohile, 2003, from the research lab of an Indian hair-oil company) found that coconut oil reduced protein loss from both undamaged and damaged hair when used before and after washing, while sunflower and mineral oil did not. That is about breakage, not the follicle. A coconut oil champi suits breakage-prone hair, but it will not stop shedding.

Amla, methi and curry leaves

Amla, methi seeds and curry leaves are traditionally used in Indian hair oils and masks. For amla, one small trial in the Journal of Ethnopharmacology (Akhbari and colleagues, 2024) gave 60 women with female pattern hair loss an oral amla syrup or placebo for 12 weeks and reported a better ratio of growing to resting hairs. One small study of a syrup is not proof that amla oil works. We found no clinical trials for methi or curry leaves on hair. Using them is fine. Just do not let them delay a blood test.

Safety: pregnancy, medicines, kidneys and allergies

• Pregnancy and breastfeeding: check every supplement with your obstetrician. The AAD notes that prescription tablets used for female pattern hair loss must be avoided in pregnancy.
• Thyroid medicines: the British Thyroid Foundation advises avoiding certain hair supplements because they may contain iodine or interfere with levothyroxine absorption.
• Kidney disease: take no hair supplements without your nephrologist's advice.
• Allergies and sensitive skin: patch test onion juice, essential oils and new hair packs on your inner arm first.

When to see a dermatologist

See a dermatologist (or your GP first, if you live abroad) if:

• You notice round, smooth patches with no hair, or lose eyebrows, eyelashes or body hair.
• Your parting is widening or your hairline is receding. The AAD advises that a dermatologist confirm female pattern hair loss.
• Your scalp is red, scaly, painful or scarred. The American Family Physician review notes that scarring hair loss is best evaluated by a dermatologist.
• Shedding lasts more than six months, or postpartum shedding has not settled by your baby's first birthday.
• Hair fall comes with irregular periods, acne or excess facial hair (ask about PCOS), or with tiredness, feeling cold and weight gain (ask about your thyroid).
• You are simply worried. The NHS lists that as reason enough.

This article is general nutrition guidance and is not a substitute for medical care. Diagnosis and medicines belong to your doctor or dermatologist. For a personalised nutrition plan, consult your doctor or book a consultation with Dt. Trishala Goswami.

Related reading

• Best foods for healthy skin and hair
• PCOS hair loss: nutritional strategies that help
• Iron deficiency in Indian women
• Vitamin D deficiency in India: why supplements alone don't work
• Best high-protein vegetarian foods in India

Want to find out what is behind your hair fall? Book a consultation with Dt. Trishala Goswami for a nutrition plan built around your blood reports, diet and routine, working alongside your doctor or dermatologist. Online consultations for clients in India and abroad. You can also explore our Skin and Hair Nutrition program.