Is it dangerous to smoke , vape & take nicotine gum & lozenges ?

Your poor heart: Yes. Of course. You are putting your poor heart throughout the ringer aren't you?

Likely: “CDC, the U.S. Food and Drug Administration (FDA), state and local health departments, and other clinical and public health partners are investigating a multistate outbreak of lung disease associated with e-cigarette product (devices, liquids, refill pods, and/or cartridges) use.” REF: https://www.cdc.gov/tobacco/basic_information/e-cigarettes/severe-lung-disease.html