Today on the Medscape Medical Minute: Patient care is disrupted as nurses in New York go on strike over lack of staffing; patients with chronic pain are substituting medical cannabis for opioids; and a medical practice in the UK texted its 8000 patients a holiday message that they had lung cancer.

Today on the Medscape Medical Minute: In a new study, researchers attempt to unravel the mystery of why mRNA vaccines cause myocarditis; physical activity reduces deaths and hospitalizations from COVID; and short bursts of activity can help you live longer, according to a new study.

Today on the Medscape Medical Minute: Patients having anesthesia with surgery should be asked about marijuana use, new recommendations say; new guidelines from the American Academy of Pediatrics call for medication and surgery to treat obese children; and the NIH launches a program to use telehealth to provide antiviral treatments for those who test positive for COVID at home.

Today on the Medscape Medical Minute: A new study suggests one way that doctors can reduce the amount of opioids they prescribe; 1 in 5 people in the US used marijuana in 2021; and a new study finds a genetic link between COVID and macular degeneration.

Today on the Medscape Medical Minute: China tells the WHO that nearly 100% of COVID infections were caused by two Omicron subvariants; an international survey finds that one fourth of cardiologists report mental health problems; and sniffing essential oils may help COVID patients recover their lost sense of smell.

Today on the Medscape Medical Minute: A surgeon's license is suspended after live-streaming an operation on TikTok; the FDA says it may begin regulating cannabis-infused foods and supplements; and leading scientists say the WHO needs a more realistic picture about the COVID situation in China.

Today on the Medscape Medical Minute: Drugmakers are planning to raise the price of more than 350 unique products in 2023, according to a healthcare research firm; rates of cervical cancer are rising in White women, a new analysis says; and edible cannabis products are behind a surge in poisonings among young children, according to an analysis in the journal Pediatrics.

Today on the Medscape Medical Minute: Supplements reduced BMI in children with obesity, according to new data; a minoxidil combination improved alopecia in women with breast cancer; and the Alzheimer's Association has asked CMS to provide unrestricted coverage for anti-amyloid drugs.

Today on the Medscape Medical Minute: A new literature review addresses the level of problem drinking among physicians; vaccine hesitancy is fueling a measles outbreak in Ohio; and a paper on the Omicron variant that was published in the journal Science has been retracted.

Today on the Medscape Medical Minute: Does COVID vaccination provide more protection than having COVID does?; a new study cites a wide variation in survival rates after cardiac arrest in cath labs across the US; and corticosteroid injections may worsen progression of knee osteoarthritis, according to new findings.