Elektronik sigara zararl m? Prof. Dr. Aye Elif Kpeli E cigarettes may not contain tobacco, but they still deliver nicotine, a highly addictive substance that can harm the developing brain, increase blood pressure, and lead to long term addiction. Many also contain toxic Do Smoking and Nicotine Cause Headaches and Migraines? NHI Symptoms like dizziness, nausea, and headaches after vaping aren't harmless. That is your body reacting to too much nicotinea serious warning that your body is being poisoned. Learn what's really happening and