Alcohol and cigarettes kill more people than any illegal drugs
and
Nicotine. Cigarettes and tobacco products kill thousands of people every year.
the reason they kill the most people is because the most people use them due to the fact they are legal. if they were the worst drugs then they would be illegal. I dont know what the worst drugs are but the ones with the least bad effects on the body are weed and shroom. LSD is farely health minus the fact that u can have a random trip later in life hahaha
Apparently Heroin is the worst based on damage to the body and level of addiction. Weed and LSD have barely any affects on the body, and have very low levels of addiction; even less than nicotine.