CNN By Deidre McPhillips, CNN (CNN) — GLP-1 medications such as Ozempic and Wegovy may help lower the risk of certain cancers, a new study suggests. People who are overweight or obese have a higher risk of getting 13 types of cancer, and the risk increases the longer a person is overweight and the more excess weight they gain. About 40% of new cancer diagnoses are associated with excess weight, according to the US Centers for Disease Control and…