Harms of Tobacco Consumption According to WHO, India reports around 1.35 million deaths every year due to tobacco (smoking, smokeless tobacco products, and SHS) causing diseases like Cancer, Coronary artery disease, Chronic obstructive lung disease, Tuberculosis, stroke, cataracts, peripheral vascular diseases, and disorders like impotence among men and use by pregnant women leads to low birth weight babies, stillbirths and birth defects
Immune System Disturbances Ulcers have been seen in HIV positive patients, immunodeficient individuals, myelodysplastic syndromes, and forms of neutropenia
2000 Nucleic Acids Res
This lowers the risk of colitis, which is inflammation of the colons inner lining
Link Between ADHD & Addiction People with Attention Deficit Hyperactivity Disorder (ADHD) sometimes experiment with addictive drugs to help them manage their symptoms
Also, seeing as Robin said of Sanji, " He is truly a man worthy of being both wings of the Pirate King, " it seems that the other crew members are fully aware that Zoro and Sanji are Luffy's wings