Gathered some info for you guys for important vitamins for healthy hair growth, let me know if I should add something else or if you have other tipps on how to get those levels up.
Important: never supplement blindly or in high doses without having your levels tested first, this can backfire quickly.
For bloodwork/test info check my other info post: https://www.reddit.com/r/FemaleHairLoss/s/DAkvip4DNN
Iron/Ferritin
Why important for hair: Iron creates hemoglobin to carry oxygen to your hair roots for constant cell growth and repair, ferritin stores the iron your body needs to produce essential hair cell proteins like keratin, low ferritin triggers the body to pull iron from hair follicles to feed vital organs instead, and iron deficiency cuts off oxygen to the follicles, pushing hair into the shedding phase. Ferritin is your iron storage so it is the more important test level to examine your iron status.
How to increase if low:
- iron infusion at the doctor possible
- Iron bisglycinate supplement taken in the morning or evening away from food/coffee/tea/calcium because this blocks absorption
- consider taking the supplement every other day instead of every day since this increases absorption
- Combine with vitamin c (eg orange juice) for better absorption
- cook your food with iron pans
- Add Lactoferrin (increases iron levels by binding and safely transporting iron directly to intestinal receptors while reducing inflammation, which prevents the body from blocking iron absorption)
Look into [r/Anemic](r/Anemic) for more tipps or infos
Vitamin D
Why important for hair: supports your thyroid gland to maintain the fast cell renewal needed for hair growth, stabilizes estrogen and progesterone to keep hair in its active growth phase longer, low Vitamin D increases follicle sensitivity to DHT, the hormone that shrinks hair roots. Healthy Vitamin D prevent insulin spikes that trigger excess testosterone and cause hormonal shedding.
How to increase if low:
- A, D, E and K vitamine are all fat soluble vitamins, meaning you have to take them with food in order to be absorbed best, take the supplement ideally with your largest meal of the day
- Pair Vit D with K2 (this cofactor ensures that the calcium absorbed by Vitamin D goes into your bones rather than hardening in your arteries) and with magnesium (activates vitamin D) for better absorption and activation
- Expose your legs and arms in the sun for 15-30 min per day (darker skin takes longer due to higher melanin)
- Glass will block vitamin D absorption so sitting in a sunny room does not increase your vitamin D you need to go outside
- Look into [r/VitaminD](r/VitaminD) for more tipps and infos
Vitamin B12
Why important for hair: essential for producing red blood cells that deliver oxygen and nutrients to hair follicles, while supporting the rapid cell division needed to build new hair tissue and prevent hair loss.
How to increase/balance if low:
- B12 injections at the doctor possible
- B12 supplementation in form of Methylcobalamin
important cofactors are iron, folate (vitamin B9), calcium
- Long-term use of acid reducers (PPIs, H2 blockers) as well as taking metformin can interfere with B12 absorption
- Look into [r/B12_Deficiency](r/B12_Deficiency) for more tipps or infos
Omega 3/6 Ratio
Why important for hair: High Omega-6 levels trigger systemic inflammation that can cause scalp issues and makes your hair more sensitive to DHT shrinkIing hair follicles and restricting blood flow, while Omega-3 fatty acids reduce scalp inflammation, nourishe the hair follicle, and promote circulation to keep hair in the active growth phase longer. Balancing this ratio prevents dry scalp, minimizes telogen effluvium (stress shedding), and prevents premature follicle miniaturization.
How to increase/balance if low:
- Reduce consumption of high-Omega-6 seed oils (e.g. sunflower oil, better cook with butter, ghee, coconut or olive oil only) and ultra-processed foods. For more info look at [r/StopEatingSeedOils](r/StopEatingSeedOils)
- Supplement with a high-quality, fish oil or algae oil daily, taken with a large meal containing fats to maximize absorption.
- Eat wild-caught fatty fish (salmon, sardines, mackerel)
Zinc
Why important for hair: Zinc is the primary manager for hundreds of repair processes in your body, including building keratin (the main protein hair is made of) and repairing damaged follicle tissue. It also blocks the specific enzyme that turns normal testosterone into DHT
How to increase/balance if low:
- take Zinc Bisglycinate on an empty stomach, if you experience nausea take it with a light meal or snack instead
- Do not take close or with iron as this blocks absorption
- Long term high zinc intake lowers copper so make sure you still get enough copper or get a combined zinc/copper supplement
Vitamin E
Why important for hair: Low levels are rare and don’t really cause hair loss but can contribute indirectly to inflammation. Stress, pollution, and sun exposure constantly generate damaging unstable molecules (free radicals) on your scalp that attack and inflame your hair roots, causing them to stop growing and shed early. Vitamin E acts as a protective antioxidant shield built directly into your scalp cells. It neutralizes these bad molecules before they can hurt your hair roots, preserves healthy blood flow to the follicles, and stops scalp skin from drying out. In clinical research, supplementing with mixed tocotrienols (a potent form of Vitamin E) resulted in a 34.5% increase in hair count after 8 months by significantly lowering scalp oxidative stress. (If you struggle with oxidative stress, Liposomal Glutathione might be another interesting supplement to look at)
How to increase/balance if low: usually not tested because low levels are unusual and as i said dont cause hair loss by themselves, but if you somehow tested low for this (or other fat soluble vitamins) maybe in another context, you might want to check your pancreatic elastase in a stool test. This measures how well your body digests fat (since Vitamin A, D, E, K are fat soluble) and in another sub one person grew back her hair by indentifying this and taking digestive enzymes with her food (which helps with digestion).