Eye floaters, which can take the form of spots, strings or cobwebs in a person's field of vision, occur naturally as part of the aging process, and they cannot be cured, according to Mayo Clinic and All About Vision. In extreme situations where floaters become an impediment to vision, they can be surgically reduced.
4. Bad Habit: Eating too much fast food. Why It's Dangerous: A steady diet of double cheeseburgers and fries washed down with an oversize soda or milkshake often leads to a bigger waistline and other related health problems, like heart disease and diabetes.
The leading causes of death have to do with bad habits, including smoking, poor diet and a lack of exercise, the report from the Institute for Health Metrics and Evaluation at the University of Washington finds.