Cannabis Use Linked to Epigenetic Changes, Study Shows

[Pelican Press 0]

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Cannabis Use Linked to Epigenetic Changes, Study Shows

Using cannabis may cause changes in the human body’s epigenome, a study of over 1,000 adults suggests. The

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functions like a set of switches, activating or deactivating genes to change how our bodies function.

“We observed associations between cumulative ********** use and multiple epigenetic markers across time,”

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epidemiologist Lifang Hou from Northwestern University when the research was published in 2023.

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is a commonly used substance in the ******* States, with 49 percent of people trying it at least once, Hou and a team of US researchers report in their

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. Some US states and

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have made it legal, but we still don’t fully understand its effects on our health.

The researchers studied around 1,000 adults who had participated in a long-term previous study where they had been asked about their cannabis use over a 20-year *******. Study participants provided blood samples on two occasions during that time, at the 15- and 20-year points. They were aged between 18 and 30 at baseline, or ‘year 0’.

Using these blood samples from five years apart, Hou and her team looked at the

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, specifically

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levels, of people who had used cannabis recently or for a long time.

The addition or removal of

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from DNA is one of the most studied epigenetic modifications. Without changing the genomic sequence, it changes the activity of genes, because it’s ******* for cells to read the genome instruction manual with these molecular changes in their way.

Environmental and lifestyle factors can trigger these methylation changes, which can be

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, and blood

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can provide information about both recent and historical exposures.

“We previously identified associations between ********** use and the aging process as captured through DNA methylation,” Hou

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.

“We wanted to further explore whether specific epigenetic factors were associated with ********** and whether these factors are related to health outcomes.”

The comprehensive data on the participants cannabis use allowed them to estimate cumulative use over time as well as recent use and compare it with DNA methylation markers in their blood for analysis.

They found numerous DNA methylation markers in the 15-year blood samples, 22 that were associated with recent use, and 31 associated with cumulative cannabis use. In the samples taken at the 20-year point they identified 132 markers linked to recent use and 16 linked to cumulative use.

“Interestingly, we consistently identified one marker that has previously been associated with tobacco use,” Hou

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, “suggesting a potential shared epigenetic regulation between tobacco and ********** use.”

Multiple epigenetic changes associated with cannabis use had previously been linked to things like

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,

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, infections, neurological disorders like

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and

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, and

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.

It’s important to note that this study doesn’t prove that cannabis directly causes these changes or causes health problems.

“This research has provided novel insights into the association between ********** use and epigenetic factors,”

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epidemiologist Drew Nannini from Northwestern University.

“Additional studies are needed to determine whether these associations are consistently observed in different populations. Moreover, studies examining the effect of ********** on age-related health outcomes may provide further insight into the long-term effect of ********** on health.”

The study has been published in

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.

An earlier version of this article was published in July 2023.

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