Probiotic blend reduces hair-loss through gut-skin axis: Study

By Olivia Haslam

- Last updated on GMT

© nopparit / Getty Images
© nopparit / Getty Images
Researchers find that a combination of probiotic strains of Lactiplantibacillus reduces gradual hair loss in people with androgenetic alopecia (AGA).

The study conducted by biotech company Darwin Bioprospecting Excellence and published in the journal Nutrients, ​assessed the effect of ​a probiotic blend of Lactiplantibacillus ​strains comprising L. plantarum​ DCn_07, L. plantarum​ DCn_06, and L. pentosus​ DCn1_05 or placebo on 136 individuals with AGA over 16 weeks. 

The probiotic-treated group exhibited a significantly higher abundance of Lactobacillus ​and demonstrated a notable reduction in hair shedding, as well as an increase in hair growth.

Results “emphasize the importance of gut lactobacilli in the treatment of alopecia” according to the authors from Spain.

Hair growth 

Hair follicles grow in cycles, undergoing distinct phases: anagen (growth), catagen (transition), telogen (shedding), and exogen (atrophy).

AGA represents the most common form of hair loss​, affecting approximately 80% of men and 50% of women. Genetic and hormonal factors primarily influence it, particularly the conversion of testosterone to dihydrotestosterone (DHT), which leads to follicle miniaturization. 

Common hair loss treatments include pharmacological options like finasteride and minoxidil, however, emerging research suggests a potential role for probiotics in supporting hair health by improving intestinal microbiota balance.

As recent studies​ have shown a clear relationship between probiotics and skin-related conditions, the authors of this new research hypothesised oral probiotics may present promise as a new therapeutic approach for hair health through the gut–skin axis. 

Probiotics for hair loss

Researchers enrolled participants (62 men and 74 women, aged 18–65 years) in a double-blind, parallel-group clinical trial, where they took either the probiotic blend provided by Darwin Bioprospecting Excellence, or a placebo daily for the duration of the study. 

Researchers conducted assessments before and after the intervention period to measure was the difference in the number of hairs per square centimete, as well as number of relevant hairs per square centimeter, hair length, hair thickness, comparative manual trichograms, scalp sebum measurement, comparative scalp photographs, and metagenomic analysis of the intestinal microbiota.

At the conclusion of the study, results showed a notable decline in the number of telogen hairs in the probiotic group, while hair thickness decreased in the placebo group. 

In the probiotic-treated group, individuals aged less than 37.5 years exhibited a reduction in the number and density of telogen hair and an increase in hair length. 

The researchers also noted a notable decline in the number and density of vellus hair, and this was accompanied by no change in the hair thickness. 

The authors hypothesised that probiotic worked by not consuming biotin (vitamin B7), which is largely dependent on bacterial production, and is an essential nutrient for skin health. Its deficiency is closely associated with hair loss​. 

This allowed it to colonize the intestine and outcompete biotin-consuming bacteria, which would increase the bioavailability of biotin, both from intestinal production and dietary intake, which several studies​ found improves hair growth.

 

Journal: Nutrients​ 
“Randomized Clinical Trial to Evaluate the Effect of Probiotic Intake on Androgenic Alopecia.”
doi: https://doi.org/10.3390/nu16172900
Authors: Alejandro García-Navarro, et al.

Related products

show more

Perfect skin radiance & uniformity

Perfect skin radiance & uniformity

Content provided by Robertet Health & Beauty | 30-Sep-2024 | Product Brochure

As a leading expert in the nutricosmetics industry, Robertet presents a brand-new ingredient. This new product will be our 5th nutricosmetic ingredient,...

Gut and mental health struggles affect consumers

Gut and mental health struggles affect consumers

Content provided by Verb Biotics | 23-Sep-2024 | White Paper

Verb Biotics, a biotech company focused on improving health through the gut microbiome, recently completed its second annual consumer survey to assess...

Explore Probiotic Adventure in Weight Management

Explore Probiotic Adventure in Weight Management

Content provided by CJ BIO | 02-Sep-2024 | White Paper

Curious about how you can deliver standout solutions? Dive into our trend report for valuable insights into current weight management market trends and...

Related suppliers

Follow us

Products

View more

Webinars