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Hair loss and dietary deficiencies

In order to grow properly, the hair needs enough vitamins and nutrients. Certain dietary deficiencies can have a direct impact on hair loss.

Hair loss and deficiencies: a vicious cycle

On the one hand, you have vitamins and minerals. They play a fundamental role in maintaining a normal hair cycle, especially with regard to renewing the hair bulb’s cells and their rapid rate of division. An insufficient intake, due primarily to an imbalanced diet, can be among the causes of hair loss. Deficiencies in certain vitamins and minerals disrupt the hair’s composition and cause it to become fragile and fall out.

On the other hand, there are sulfur amino acids, such as methionine and cysteine, precursors of keratin, which is the main component of the hair fiber. With age, however, these amino acids are more difficult to absorb and bind, despite being beneficial for growth and strengthening the hair.  

This is one of the reasons dermatologists tend to recommend a treatment of food supplements containing sulfur amino acids. This complementary treatment helps repair structural damage to the hair and slows down hair loss in people with alopecia. They are recommended primarily to compensate for the ever-so-common postpartum hair loss

The different dietary deficiencies that contribute to hair loss

Hair loss and iron deficiency. 

As a component of hemoglobin, iron supplies energy to cells as they divide, thus fueling hair synthesis. A number of studies indicate a link between iron deficiency (with and without anemia) and hair loss, particularly with regard to acute or chronic telogen effluvium and androgenetic alopecia*. 

Hair loss and zinc deficiency.

Zinc is an enzyme activator that stimulates the transformation of proteins, which provide the necessary bonds for the hair’s structure. It also acts on the keratinization effect of vitamin A on the hair. Correcting a zinc deficiency thus promotes hair regrowth. 

Hair loss and vitamin B12 deficiency. 

The vitamin B complex includes eight water-soluble molecules (including vitamin B12), all of which contribute to the physiological role essential to cell metabolism. Deficiencies in B vitamins can be linked to hair loss. 

Hair loss and vitamin D deficiency. 

Sun exposure helps the body synthesize vitamin D, a lack of which can be an aggravating factor in reactional hair loss (acute telogen effluvium), particularly in autumn.  

* Source: Kantor 2003, Rushton 2002, Guo and Katta 2017

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My anti-occasional female hair loss routine (less than 6 months)

Action against occasional hair loss (caused by stress, fatigue, post-pregnancy, changing seasons, etc.)

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Action against chronic hair loss (> 6 months)

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My anti-chronic female hair loss routine (over 6 months)

Action against chronic hair loss

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