does rolling tobacco contain tar NOVA Online | Search for a Safe Cigarette Cigarette Tar | PMI Science

Philip Morris representatives say the nicotine-only formulation is part of Zyns appeal

is an occupational medicine physician who directs the Barry Commoner Center for Health and the Environment at City University of New York

Tobacco contains nicotine and other harmful chemicals that can damage blood vessels

Crack cocaine is a stimulant that can create a cycle in which people quickly exhaust their resources and turn to other ways to get the drug, including trading sex for drugs or money, which increases HIV risk

Common DVT risk factors include: Understanding these risk factors helps people identify when they might be more vulnerable to developing DVT