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Acetylcholine, in particular, plays a critical role in the digestive process

Goniewicz ML, Lee L

Nicotine in tobacco products causes your blood vessels to become narrower and makes your heart beat faster, which leads to higher blood pressure

Because the purpose of the coughing is to remove the unwanted material thats collected in your lungs during your years as a smoker, its not unusual to cough up some fairly ugly looking phlegm after you quit smoking

Unlike cigarettes, which contain harmful chemicals produced by combustion, vaping involves heating e-liquids to produce vapor, eliminating many of the toxins found in tobacco smoke