doi: 10.1371/journal.pone.0042971 75 YunXLiFChenZMengJZhangLYuanJ
One interesting theory Ive heard is that in people with a long history of alcohol-use disorder of heavy drinking that the blood-brain barrier becomes leakier, that its easier for different things to cross into the brain, and that, again, this may be one reason that GLP-1s perhaps are more effective in reducing substance use for people with alcohol-use disorder than other drugs
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"In addition, these results highlight the need for further research to elucidate potential mechanistic links between GLP-1 receptor agonist therapy, weight loss, and hair loss, and to identify patient level risk factors that may increase susceptibility to hair loss." It's worth pointing out that the medical records the researchers were dealing with were limited in terms of measuring the severity and duration of the hair loss, and whether or not it was reversible
And this extended stay is what leads to the health benefits