list of chemicals in cigarette smoke contains thousands chemicals, many of which are toxic and harmful to the human body. Here's a detailed breakdown of some of the most dangerous constituents and their effects: 1 PDF) Chemical Constituents of Cigarettes
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But this was only the case where the mothers smoked 10 or more cigarettes a day there was no considerable difference for those whose mothers had smoked less than ten a day

We walked into Memorial Sloan Kettering thinking we would come out a month later, cancer-free from that treatment, says Troper
More people undergo amputations because the circulation in their limbs has been destroyed by smoking than for any other reason
New or worse trouble swallowing

Effect of Long-term Smoking on Whole-mouth Salivary Flow Rate and Oral Health
If you think your dog has nicotine poisoning, heres what you might see: Vomiting Unsteadiness Drooling Tiredness Racing Heart Rate Shaking Weakness Seizures Death Cigarette smoke can kill your dog