Marijuana/CBD Archive

A 2026 review found conflicting evidence regarding the links between cannabis and heart-related problems, including heart attacks, stroke, coronary artery disease, and heart failure. The most consistent association was between cannabis use and heart rhythm problems.

A review of 25 studies found that some cannabis products offer modest relief for chronic pain. Small benefits occurred with oral synthetic products higher in THC and plant-derived THC/CBD sprays. High THC levels were associated with side effects like sleepiness, dizziness, and nausea.

Gummies and other products that contain non-intoxicating cannabinoids, including cannabidiol (CBD), may improve sleep. While CBD is generally safe and doesn't have next-day effects, it can interact with certain medications. Whenever possible, people who use CBD products should check the certificate of analysis (which summarizes independent tests of potency and contaminant levels) before buying these products. They should also check with their doctors about potential interactions between CBD and any prescriptions or supplements they take.

Increasing numbers of older adults are using cannabis over recent years. People over 50 report using it to relax, sleep better, feel good, relieve pain, improve mood or mental health, or treat medical conditions. But older adults are more vulnerable to cannabis side effects, such as falls or interactions with prescription and over-the-counter drugs. Many older adults aren't aware that cannabis products today are far more potent than in decades past. Medical visits related to cannabis use rose more than 27-fold among adults 65 and older between 2008 and 2021.

In a 2025 analysis involving about 200 million people, those who used cannabis had a 29% higher risk for sudden heart attacks or angina and twice the risk of premature death from cardiovascular disease, compared with people who didn't use cannabis.

Cannabis use is rising among older adults, who mostly use cannabis edibles such as gummies for relaxation and sleep. While smoking cannabis may raise heart attack risk, the cardiac effects of consuming cannabis in food or drinks are less well understood. Taking too much cannabis can lead to a panic attack, which can cause a pounding heart or palpitations. People who use cannabis should take it only as needed to relieve symptoms, using the lowest possible dose.

By now, you've probably run into a product containing cannabidiol, also known as CBD. It is in everything from drinks and pet products to lotions and chewable gummies. But many people still don't really know what CBD is, what it does and doesn't do, and how it works. Below, we sort through the confusion by answering some of the most common questions about CBD.

While alcohol remains the most-used drug in the US, daily cannabis use has outpaced daily drinking. In states where recreational cannabis is legal, a popular new item is cannabis-infused beverages. These products are different from edibles, and the timing and intensity of their effects on the body differ as well.

A 2024 study suggests using cannabis weekly may be associated with an increase in people's risks of heart attack and stroke, and the risks rise dramatically with more frequent use.