Why Vaping Marijuana is Better and Healthier than Smoking it

New York state is set to legalize medical marijuana today, with Gov. Andrew Cuomo expected to sign a bill passed by the state’s legislature last week. But the proposed law is unique, and smoking a joint even for medical reasons will remain illegal.

Under the law, doctors can prescribe marijuana compounds for people who have just a handful of life-threatening and serious conditions, such as cancer and epilepsy. The new law also bars smoking the marijuana flower, and instead limits people to either taking pills, consuming the plant’s oils or extracts, or “vaporizing” the drug.

Experts say that vaporizing cannabis...