So estrogen can be directly responsible for weight gain. Estrogen is also the hormone in the female body responsible for ovulation. It is the reason women can produce eggs and these eggs fertilize with sperm to form a baby. Estrogen can increase due to many reasons including birth control pills and menopause. Birth control pills add to the existing hormone in the body and increase the womanâs appetite. This, in turn, leads to weight gain. In the case of menopause, hormonal fluctuations lead to an increase in appetite and eventual weight gain. During menopause, the body rapidly produces lesser hormones to stop ovulation.
Cigarette smoking accounts for about one-third of all cancers, including 90 percent of lung cancer cases. Smokeless tobacco (such as chewing tobacco and snuff) also increases the risk of cancer, especially oral cancers. In addition to cancer, smoking causes lung diseases such as chronic bronchitis and emphysema, and increases the risk of heart disease, including stroke, heart attack, vascular disease, and aneurysm.
Answer Wiki. Secondhand smoke, also known as Environmental Tobacco Smoke (ETS) or passive smoke, is a dangerous air pollutant that can harm your health. Secondhand smoke is made up of more than 4,000 chemicals that are released from the end of a burning cigarette and exhaled by a smoker.