Smoking raises the risk of developing conditions like macular degeneration and cataracts, and it may reduce vision, according to Healthline. Smoking also increases the chance of developing COPD and lung cancer.
One of the ingredients in tobacco smoke is nicotine, states Healthline. It is a mood-altering substance that stimulates the central nervous system, making a person feel more energized. However, that feeling soon subsides and the body craves more, forming an addiction. Additionally, smoke destroys the air sacs in a person's lungs, causing emphysema. Over time, the lungs lose the ability to filter out the toxins found in cigarette smoke, leading to COPD and cancer.
Smoking also lowers good cholesterol levels and raises blood pressure, states Healthline. This can stretch the blood vessels, allowing a build-up of bad cholesterol, which may eventually lead to atherosclerosis and the formation of blood clots. Smoking can also cause inflammation or infection of the gums as well as increasing the chance of developing mouth, kidney and pancreatic cancer.
Smoking may cause erectile dysfunction in men, and women are more likely to develop cervical cancer and experience menopause sooner, as Healthline explains. Both men and women are at a greater risk of infertility when smoking.