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does weed make your hair grow

When you smoke, vape, or eat marijuana, all you’re really doing is facilitating the release of the drug’s active compounds into your bloodstream. Once they’re in your veins, these cannabinoids ride the blood highway to the cannabinoid receptors on the body’s cells, where they bind and exert their effects. Along the way, some of the cannabinoids — metabolites of psychoactive THC are what most tests look for — enter the blood vessels that feed the cells of the scalp. There, at the interface between the vessel and the follicle cells known as the hair papilla, THC jumps the gap, entering the matrix, where actual hair growth occurs. Over the next couple of weeks, the hair from the root sprouts upward, carrying THC past the scalp, where it becomes fair game for testing for the next three months.

There are a lot of variables in hair testing for marijuana that make it a very controversial way to decide whether or not a person is fit to have a job. As mentioned above, false positives are very possible. It’s still not entirely clear, for example, whether hair can incorporate marijuana-derived compounds after simply being in the same vicinity as marijuana smoke.

How does weed get in my hair, Anyway?

Once your hair is collected, it’s washed to remove any external contaminants, chopped up, and then digested in a solution meant to break it down into its components — largely the protein keratin, together with any other compounds that make their way into the hair shaft. Usually, that solution is put through an ELISA (enzyme-linked immunosorbent assay) screen, a laboratory procedure that uses specific antibodies to bind the target molecule of choice — in this case, THC. (More specifically, THCA, a direct metabolite of THC.)

How does hair testing detect THC?

Hair color — that is, hair melanin content — seems to alter the sensitivity of the test, with darker-colored hair being more sensitive to the test, according to a report from the Substance Abuse and Mental Health Services Administration. There has also been some concern about gray hair frequently turning up false positives, though more research is needed to explain why this happens.

We’ll give you an answer on weed’s impact on hair growth and loss — plus, provide some proven methods to combat hair loss and encourage regrowth. Read on for healthier hair.

The Connection Between Marijuana and Hair Loss

One of cigarettes' negative effects is that it has been found to damage your strands.

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Loss of hair can be caused by a variety of factors such as genetics, tight hairstyles, medications and more.

Does weed make your hair grow

Catagen – This is a period of around two weeks when your hair. In this transitional phase, hair stops growing and detaches itself from the blood supply and is then named a club hair.

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The Link Between Smoking and Hair Loss?

So does Cannabis or Marijuana cause hair loss or hair growth?

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A study carried out by researchers at The University of Debrecen in 2007 also found that endocannabinoids and exocannabinoids found in marijuana restrain the growth of the hair follicle and trigger hair loss. In very simple terms, taking in cannabinoids may inhibit the proper development and growth of the human hair shaft and induce hair loss.

Marijuana and lifestyle changes

So to sum up, smoking, vaporizing marijuana can indeed contribute to hair loss.