What should I eat to improve hair loss? Hair-growth foods, nutrients, and doctor recommendations
Do Hair Growth Foods Work?
A more accurate way of describing hair growth foods is that they help the body provide the "raw materials" needed for hair growth. Hair is mainly composed of keratin, and hair follicle growth also requires sufficient energy, amino acids, iron, zinc, and vitamins.
If the body suffers from long-term nutritional deficiencies, hair may:
- Become finer and softer
- Be prone to breakage
- Increase hair loss during showering
- See a reduction in overall hair density
However, if the hair follicles are already affected by male pattern baldness, or if there is scalp inflammation or immune issues, relying solely on food usually cannot solve the underlying problems.
What Nutrients Does Hair Need?
1. Protein: The Main Raw Material for Hair
Hair is mainly composed of keratin. When protein levels are insufficient, the body prioritizes vital organs, and hair growth may be compromised.
Common food sources include:
- Eggs
- Fish
- Chicken
- Tofu
- Soy milk
- Edamame (young soybeans)
- Greek yogurt
2. Iron: Helps Transport Oxygen to Hair Follicles
Iron deficiency or low ferritin is common in women, those with heavy menstruation, postpartum individuals, vegetarians, or those with long-term dietary restrictions. Insufficient iron can cause overall hair thinning and increased hair shedding.
Common food sources include:
- Red meat
- Shellfish
- Dark green vegetables
- Legumes
- Nuts
Plant-based iron can be consumed with Vitamin C sources, such as kiwi, oranges, or tomatoes, to aid absorption.
3. Zinc: Helps Scalp Metabolism and Cell Repair
Zinc is related to cell repair, scalp health, and follicle metabolism. Zinc deficiency can negatively impact scalp health and hair quality, but excessive supplementation can also cause discomfort.
Common food sources include:
- Oysters
- Seafood
- Meat
- Pumpkin seeds
- Nuts
- Whole grains
4. Vitamins B, C, D, E: Assist Metabolism and Antioxidation
Vitamin B complex is related to energy metabolism; Vitamin C aids iron absorption; Vitamin D is linked to the hair growth cycle and immune regulation; and Vitamin E is a common antioxidant nutrient.
However, we do not recommend long-term self-supplementation with high doses. It is best to first determine if you are truly deficient.
Common Hair Loss Nutrients
| Nutrient | Role for Hair | Common Foods | Reminders |
|---|---|---|---|
| Protein | Provides keratin raw materials | Eggs, fish, meat, tofu, soy milk, cheese | Pay special attention for those on diets or trying to lose weight |
| Iron | Helps transport oxygen to hair follicles | Red meat, shellfish, dark green vegetables, legumes | Suggest consulting a doctor and taking blood tests to confirm iron deficiency |
| Zinc | Participates in scalp metabolism and cell repair | Oysters, seafood, pumpkin seeds, nuts | Excessive supplementation may have side effects |
| Vitamin B Complex | Assists metabolism, iron absorption, and antioxidant protection | Vegetables and fruits, whole grains, eggs, fish, nuts | Deficiencies require targeted supplementation |
Do You Need to Take Hair Growth Supplements?
Many hair growth supplements on the market contain biotin, zinc, iron, Vitamin D, amino acids, or plant extracts. If you are genuinely deficient, replenishing nutrients may help.
However, if you are not deficient, high-dose supplementation may not cause your hair to grow, and it certainly cannot replace treatment for male pattern baldness, alopecia areata, or scalp diseases.
Points to note:
- Do not focus only on advertised ingredients.
- Do not take too many different supplements at the same time.
- Iron, zinc, Vitamin A, and D are not recommended for random supplementation.
- If you are planning pregnancy, pregnant, have chronic conditions, or take long-term medication, consult a doctor first.
Eating Healthily but Still Losing Hair, Why?
Hair loss is not necessarily a dietary problem. Even with a balanced diet, hair loss may be caused by the following reasons:
- Male pattern baldness
- Female pattern hair loss
- Seborrheic dermatitis (scalp)
- Folliculitis
- Telogen effluvium following stress or illness
- Postpartum hair loss
- Thyroid issues
- Side effects of medication
- Family genetics
Therefore, if you have been eating healthily but your hairline is receding, the crown is thinning, or the parting is getting wider, it is not advisable to rely solely on supplements to observe the situation.
What to Eat During the Hair Loss Period?
The dietary focus is: sufficient protein at every meal, paired with vegetables, fruits, and whole grains; avoid long-term low-calorie diets or extreme weight loss.
Breakfast
Options include:
- Eggs
- Unsweetened soy milk
- Unsweetened yogurt
- Whole grain bread
- Fruit
Lunch
Options include:
- Fish
- Chicken
- Tofu
- Legumes/beans
- Dark green vegetables
- Brown rice or sweet potatoes
Dinner
Do not eat only salads; you must still retain sufficient protein. You can pair it with:
- Fish or tofu
- Vegetables
- Whole grains
- Root vegetables
Snacks
Options include:
- Nuts
- Edamame (soybeans)
- Fruit
- Dairy products
If you are a vegetarian, eat out frequently, have heavy menstrual flow, are losing weight rapidly, or have poor gastrointestinal absorption, it is advisable to pay close attention to protein, iron, zinc, Vitamin B12, and Vitamin D.
1. What should I eat to grow hair?+
There is no single food that guarantees hair growth. It is recommended to first ensure ample nutrition including protein, iron, zinc, B vitamins, and vitamins C, D, and E. If hairline recession or thinning at the crown has already occurred, the patient should consult a doctor to determine if it is male pattern baldness (androgenic alopecia) or another type of hair loss.
2. Does iron deficiency cause hair loss?+
Iron deficiency or low ferritin levels can potentially cause overall hair thinning. This is more common in women, those with heavy menstrual bleeding, postpartum individuals, and vegetarians. It is advisable to consult a doctor for blood test evaluation to confirm if iron supplementation is necessary.
3. Can biotin increase hair volume?+
If a person is naturally deficient in biotin, supplementation may help. However, the majority of people are not truly deficient, and indiscriminate supplementation may not lead to increased hair volume. The underlying cause of hair loss still requires professional medical assessment by a doctor.
4. Does insufficient protein cause hair loss?+
Long-term insufficient protein or caloric intake may affect the hair follicle growth cycle, causing hair to become thinner or shedding more. Individuals engaging in rapid weight loss, dieting, or consuming only a limited variety of foods should pay special attention.
5. If I eat healthily, why am I still losing hair?+
Hair loss is not solely related to diet. Causes can include male pattern baldness, female pattern hair loss, scalp inflammation, stress, postpartum changes, illness, or medication. If hair loss persists, it is recommended to schedule a clinic consultation for an examination.
6. How long should I wait to see a doctor for hair loss?+
If excessive hair loss persists for more than 3 months, or if symptoms such as hairline recession, thinning of the crown, localized bald patches, or scalp redness/itching/pain develop, it is advised to visit a hair loss clinic as soon as possible.
This article has been reviewed and medically approved by Dr. Wen-Yi Wu
Dr. Wen-Yi Wu｜Director, Mong Hair Clinic
- ●Fellow of ISHRS (FISHRS)
- ●ABHRS Board-Certified Hair Restoration Surgeon
- ●President of TSHRS (Taiwan Society of Hair Restoration Surgery)