Hair loss treatment: Quercitrin stimulates hair growth by encouraging ‘anagen’ phase

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As interest in this field continues to gain traction, new research has discovered the beneficial side effects of quercitrin on hair growth. Here’s what the science says.

Published in the National Library of Medicine in the last quarter of 2020, a research team from Chungnam National University, South Korea, put forward their findings.

They investigated the “molecular mechanisms of quercitrin” – an extract from houttuynia cordata extract.

Houttunya cordata is known as an attractive low-growing “chameleon plant”, clarified Gardeners’ World Magazine.

Observing cultured “human dermal papilla cells (hDPCs)”, quercitrin was found to “enhance cell viability and cellular energy metabolism”.

Quercitrin does this by “stimulating the production of Bc12 – an essential marker for anagen hair follicle and cell survival”.

The anagen stage in the hair growth cycle is known as the “growth phase”, explained haircare specialist Philip Kingsley.

On average, hair strands grows around half an inch per month in the anagen phase.

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The anagen phase can last between three to seven years, meaning there’s room for growth.

Following on from the anagen phase, the catagen phase is a transitional period of 10 days before hair rests for around three months in the telogen phase.

The final phase is the exogen phase where hair strands are released from their follicles and fall out.

Each hair follicle is independent and will work through the hair growth cycle.

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This means hairs fall out while others are in the growth phase; otherwise, everyone would repeatedly go completely bald every few years.

The scientific research paper pointed out that quercitrin increased the “expression of growth factors”, such as “bFGF, KGF, PDGF-AA, and VEGF”.

From this data, the researchers concluded: “Quercitrin is (one of) the active compound(s) of Hottuynia cordata extract which showed hair growth promoting effects.”

What’s quercitrin?
WebMD stated quercitrin is a plant pigment (i.e. a flavonoid) that has antioxidant and anti-inflammatory effects.

Quercitrin is easily obtainable in supplementation form, which can be found in some supermarkets and health stores.

It’s also found in vegetables, said WebMD, with the following list containing “high amounts”:

  • Kale
  • Tomatoes
  • Broccoli
  • Raw asparagus
  • Capers
  • Raw red onion
  • Nuts and seeds
  • Olive oil
  • Red grapes
  • Cherries

Quercitrin is also available in herbs, such as:

  • American elder
  • St John’s wort
  • Ginkgo biloba

When taken as food, quercitrin is likely safe, but if taken in supplement form, one is advised to speak to their doctor first.

This is to ensure quercitrin supplementation won’t interact with any other medications you may be on.

Hair loss prevention works well in tandem, so as well as taking quercitrin – whether it’s from food or supplements – other measures can help.

For example, the daily use of minoxidil is recommended for those concerned about hair loss.

Minoxidil is medication used for the treatment for male-pattern hair loss.

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