pictures of cancer caused by chewing tobacco Oral and tobacco: developments in harm reduction What are the first signs

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Smoking affects your body by: raising your blood pressure and heart rate lowering oxygen levels in your blood reducing blood flow to your heart and brain increasing the risk of blood clots damaging your arteries weakening the walls of your arteries, increasing the risk of an aneurysm (bulging blood vessel) harming your lungs and making breathing harder increasing the risk of chronic lung disease, such as chronic obstructive pulmonary disease (COPD) increasing the risk of poor blood flow to your legs lowering good cholesterol and raising triglycerides

For example, there is evidence that e-cigarette use is associated with biomarkers 43 reflective of increased risk of cancer but the overall evidence on cancer is still limited and can sometimes be conflated 44 with risks from former smoking

Difficulty concentrating, energy slumps during the day, or a frequent need to smoke in order to keep going can also be warning signs