is tobacco physically or psychologically addictive Difference Between Physical and Psychological Addiction How Nicotine Addiction Works Explained

2018;40(2):e289

While all smokers face health risks, we excluded trials specifically targeting pregnant women as these often involve different motivations and treatment approaches that warrant separate analysis

Smoking aggravates retinal damage by constricting blood vessels and reducing oxygen supply to the eyes

However, even after iodization, the odds ratio for having thyroid enlargement was increased for smokers and smokers still had a lower mean thyroid stimulating hormone and a higher free thyroxine in serum than nonsmokers.[] The two most common hypotheses to explain this phenomenon involve the role of thiocyanate and thyroglobulin