Effects of cannabis use on the heart.

Cannabis and the marijuana derived from it, which mainly contains the psychoactive ingredient tetrahydrocannabinol (THC), is increasingly being used both for medicinal purposes and as a narcotic. While many emphasize the positive aspects and uses of cannabis, it is equally important to examine the potential negative effects on health. Here, we pay special attention to undesired cardiovascular effects, as the cardiovascular system is known to react strongly to psychoactive substances. This article highlights the current scientific findings on the effects of cannabis and marijuana on the heart and cardiovascular system. Since many patients conceal their marijuana consumption, we expect a high number of unreported cases. Therefore, the need to disclose any drug consumption is crucial for further therapeutic decisions when taking the medical history.