Nutrients to Help Hair Regrow

Nutrients to Help Hair Regrow


There are four main types of hair loss:

  • Alopecia areata. Considered an autoimmune disease, though researchers have yet to discover the antibodies involved. Characterized by small hair follicles and slower hair growth.
  • Telogen Effluvium. While some 80% of hair follicles are typically in the growth phase at any one time, 20% or so are in the telogen, or the resting phase. This means hair tends to fall out, and this phase is the reason why it’s normal to lose 50-100 hairs per day. Telogen Effluvium occurs when a much higher percentage of hair enters the telogen phase at once than normal. This is thought to be due to stress, occurring 6 weeks to three months after a stressful event. It’s generally self-limited.
  • Androgenic alopecia (male pattern hair loss). High testosterone levels, or high levels of other hormones in the androgen family are responsible for this one. Most often, the problem is that testosterone converts to dihydrotestosterone, or DHT. DHT causes hair follicles to shrink, usually in patterns involving a receding hairline or in one centralized location. Women can have this pattern as well as men, but usually if they do, it indicates high levels of androgens, often due to PCOS.
  • Female Pattern Hair Loss. This is characterized by more diffuse all over thinning. More often than not, the cause is either hypothyroidism or low ferritin.


Sometimes the cause becomes obvious from the case history: there was a major illness, an accident, pregnancy, or death in the family. Perhaps there’s a past medical history of other autoimmune conditions. Maybe there are a bunch of other hypothyroid symptoms (constipation, fatigue, weight gain, dry skin, cold extremities). For a man, perhaps there’s a family history of male pattern hair loss; for a woman, perhaps she has other symptoms of androgen excess, such as acne or oily skin, irregular periods, or abnormal hair growth.

Depending on the conversation, here are some tests that might be appropriate:

  • Ferritin
  • A full thyroid panel: TSH, fT3, fT4, reverse T3, Anti-TPO, Anti-thyroglobulin
  • Androgens: free and total testosterone, DHT
  • For a woman, a PCOS workup: LH and FSH, androgens, estradiol and progesterone, insulin, HbA1c
  • Salivary cortisol testing — was there a major stressor? The adrenals will likely show it.
  • ANA with reflex: this is a grab bag for autoimmunity, to see if there are any other autoimmune conditions involved, though this will not necessarily be positive even if the cause is alopecia areata.
  • Micronutrient testing (see below.)


Regardless of the type of hair loss, deficiency in some of these micronutrients might be to blame.

  • Iron. I have to give this one top billing, because it’s the nutrient most often responsible for female pattern hair loss. Specifically it’s deficiency in ferritin, or the storage form of iron, that’s to blame. I wrote here on why ferritin tends to be chronically low in some people. It’s not enough just to supplement with iron to get the ferritin up— you need to know why it was low in the first place and treat that.
  • Vitamin D. There’s definitely a connection between low Vitamin D and autoimmunity, so it’s not surprising that Vitamin D deficiency is especially associated with alopecia areata. This study shows that topical treatment of Vitamin D in alopecia areata cases can be effective, while this study shows that as severity of alopecia areata cases goes up, Vitamin D concentration goes down. But this study also shows a definite correlation between low vitamin D and tellogen effluvium, as well.
  • Zinc. Zinc is one of the most ubiquitous micronutrients in the body, necessary for a wide variety of enzymatic reactions. It also helps follicles recover and protects against shrinkage. So it’s not surprising that this study found zinc deficiency plays a key role particularly in alopecia areata and in tellogen effluvium. This study, too, correlates tellogen effluvium with low levels of zinc.
  • Biotin. This B vitamin seems to be the one everyone knows about for hair loss—most of my hair loss patients come in already on a biotin supplement. This study shows that biotin can improve the strength and diameter of hair. Most patients come in on too little to do any good, though—the dose should be 10,000 mcg daily.
  • Fish Oil & Antioxidants. I’m lumping these together because that’s what researchers did in this study: a combination of fish oil and antioxidants showed significant improvements over a 6 month period in hair loss, hair diameter and density. Fish oil is one of those nutrients I think everyone should be on anyway. Antioxidants are another: this class of micronutrients include all those that quench free radicals, speculated to be part of the cause of cellular aging. Antioxidants include Vitamin C, selenium, Vitamin E, CoQ10, Alpha Lipoid Acid, N-Acetyl Cysteine, and resveratrol, to name a few. They work synergistically and are protective not only against age-related hair graying and hair loss, but also against most chronic Western diseases.


In some cases, the cause of hair loss is obvious. If it’s not, I’d definitely recommend a good work-up, including the nutrients listed above (except for fish oil and antioxidants—it’s possible to run levels on these, but only through specialty labs. Besides, you should be taking them anyway.) If you decide to try the nutrients listed above without testing, a few guidelines:

  1. Don’t take iron unless you’ve had levels tested. Too much iron becomes a pro-oxidant instead of an anti-oxidant, which is bad news.
  2. Don’t take more than 30 mg of zinc for any length of time; you can set yourself up for a copper imbalance. And you’ll probably want to take it with food, since it’s likely to make you nauseous otherwise!
  3. It’s possible to overdose on Vitamin D, so don’t go crazy unless you’ve had your levels tested and a doctor told you how much to take! A safe maintenance dose is 2000 IU daily.

By |2017-05-30T07:33:11-07:00December 9th, 2016|Categories: Articles, Beauty, Conditions & Treatments, Men's Health, Nutrition, Supplements, Women's Health|3 Comments

About the Author:

Dr. Lauren Deville is board-certified to practice medicine in the State of Arizona. She received her NMD from Southwest College of Naturopathic Medicine in Tempe, AZ, and she holds a BS in Biochemistry and Molecular Biophysics from the University of Arizona, with minors in Spanish and Creative Writing. She also writes fiction under a pen name in her spare time. Visit her author website at


  1. Tommie January 9, 2017 at 8:51 pm

    Hello Dr. Lauren
    I need your medical advice as l am desperate and depressed about my extreme hair loss over the last three months l have lost most of my Hair almost bald now l have been tested for Ferritin it’s at 34 l’m taking ferrex150 forte plus one a day l have taken a lron and total and iron binding capacity test
    Iron total 61
    Iron Binding capacity
    339 Saturation 18
    Thyroid is 1.810 MIU /ML as 11/30/2016
    but it was 2.180 MIU/MI-1/19/2016
    I am taking Centrum silver for women 11/11/2016 but have added b12 5000mg biotin 5000mg D3 2000 IU and C 250 mg , lysine1000 mg
    E 400 IU as of 12/30/2016 I am desperate and try eat a balance diet but have seen no improvements l had beautiful long hair but now I have to wear wigs l am a 57 year old female and l would greatly appreciate your help.
    Thank you so much
    God bless you
    Sincerely Tommie

    • Dr. Lauren January 13, 2017 at 4:34 pm

      Hi Tommie — your ferritin is too low, and your iron saturation is low too (should be at least over 22%)… so you have a little ways to go there. Sounds like your thyroid might be underfunctioning too — I’d ask your doctor to run a full thyroid panel, not just TSH (so fT3, fT4, rT3, anti-TPO and anti-thyroglobulin). Centrum isn’t absorbable at all so I’d switch to a different multi. I’d get your Vitamin D checked and see if you need to take more than that (2000 is a maintenance dose). I can’t comment on the rest of your supplements without knowing more about your case. If you can see a functional medicine doctor or a naturopathic doc in your area, that would be best!

  2. jay April 25, 2017 at 10:17 am

    hi Dr,
    i posted a comment earlier but didnt have all my blood test results at hand. my questions were would low ferritin decrease the diameter of hair strands that have been in the scalp for couple of years new growth and exisiting hair is thin in diameter fly away breaks easily has no weight is a lighter colour.

    The last set of blood results are:

    haemoglobin estimation 125
    haematocrit 0.365
    rbc 4.20
    mcv 86.9
    mch 29.8
    mchc 342
    rbc distrib width 12.3
    platelet count 273
    plateletcrit 0.29
    mpv 10.6
    playelet distrib width 13.0
    total white cell count 5.49
    neutrophils 51.1
    lymphocytee 35.5
    monocytes 11.10
    eosinophils 1.60
    basophils 0.700
    ft4 15.6
    tsh 2.07
    hba1 c 33
    sodium 142
    potassium 4.8
    chloride 103
    urea level 3.0
    creatinie 77
    albumin 47
    alkalinne phosphatate 47
    inorganic phosphate 1.04
    calcium 2.46
    adjusted calcium 2.44

    all above tested in jan
    ferriin 30.6
    crp 0.43
    total protein 74
    albumin 47
    total bilirubin 13.8
    alkaline phosphayase 47
    ast serum level 18
    alt level 16
    gt level 21
    esr 2
    seru. lh level 6.0
    testosterone 1.7
    sex hormone bindinh glob 154
    free androgen 1.1
    progesterone 0.6
    fsh level 5.2
    oestradiol 661

    all above tested in feb

    what would cause the sex hormone to be so high? would this cause hair loss?

    i was sick in feb 2016 lost a stone of weight in a week. lost half stone in jan 2016 with severe stress. had a bad diet before both of these incidents for about 6 months and up u til may 2016 when noticed hair loss. bad diet because of log 13 hour working days. ferritn was 16 in June 2016, Oct 2016 22.6, jan 2017 40.4 Feb 2017 30.4. taking ferrous sulphate since march 20th 2017 200g a day.

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