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4 Tobacco Damages Spinal Discs and Bones A Hidden Spine Killer Tobacco silently dries out spinal discs your spines shock absorbers making them brittle and prone to collapse

Conclusions The researchers concluded persistent smoking after surgery for stage I NSCLC is associated with lower overall survival rates, suggesting that persistent smoking following lung cancer surgery is an important factor for long-term survival

However, this has not been confirmed

By 1978, the Department of Defense had implemented basic smoking regulations, including the designation of smoking and nonsmoking areas

Here is a BBC news link and a link to the study abstract