AHA: Results of marijuana on mind well being, operate nonetheless unclear

February 10, 2022

2 min learn

In a brand new assertion, the American Coronary heart Affiliation introduced scientific proof that challenges the assumption that marijuana is innocent and highlights uncertainty in regards to the drug’s impact on mind well being.

The assertion was printed within the Affiliation’s journal, Stroke, and introduced and mentioned throughout a symposium on the AHA Worldwide Stroke Convention in New Orleans.

infographic with data on marijuana and the brain
Infographic knowledge derived from: https://newsroom.coronary heart.org/information/how-does-cannabis-use-affect-brain-health?preview=350d

In accordance with AHA, marijuana use within the U.S. is growing, notably amongst adolescents and younger adults, with about one-third of highschool seniors and almost half of all faculty college students reporting use of the drug in 2018.

As well as, medicinal and/or leisure use of marijuana has been legalized or decriminalized in lots of states up to now 20 years, and the focus of THC in hashish merchandise has elevated from roughly 4% in 1995 to fifteen% in 2018.

The FDA and DEA classify hashish as a Schedule I managed substance, just like heroin and LSD, each of which possess excessive potential for abuse and lack medical advantages. In distinction, hemp-derived CBD is authorized, because it comprises lower than 0.3% THC.

“There’s lots of uncertainty within the medical neighborhood in regards to the well being results of marijuana,” Fernando D. Testai, MD, PhD, FAHA, a professor of neurology and rehabilitation on the College of Illinois at Chicago, mentioned in a press launch. “This scientific assertion is meant to information well being care professionals in having a balanced and intentional dialogue with sufferers in regards to the potential recognized and unknown results of marijuana on mind well being.”

Key findings from human analysis research, that are summarized within the scientific assertion, embrace:

  • Folks scored worse on driving checks when utilizing THC-dominant marijuana, in contrast with CBD-dominant marijuana or no marijuana.
  • Younger adults who participated in a 25-year coronary heart illness analysis venture confirmed a decline in verbal reminiscence take a look at scores as self-reportage of marijuana use elevated.
  • Moms who reported marijuana use throughout being pregnant had youngsters with psychological issues and poorer cognitive operate.
  • Hashish customers have an elevated threat of clot-caused stroke, with one research revealing a 17% improve and one other discovering 24% extra strokes amongst customers.

The assertion additionally highlights a number of questions on the impact of hashish on mind well being and emphasizes the necessity for additional research.

“Our understanding of the consequences of marijuana on the mind is imperfect, and human analysis on this space is a piece in progress,” Testai mentioned.


Testai FD, et al. Stroke. 2022;doi:10.1161/STR.0000000000000396.


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