Death Calculator-How Long will You Live? by Barbara Kimmel
... Does your body weight “yo-yo” as you go on and off diet fads? Yes = minus 5. No = 0. FACT: Unorthodox dietary regimens stress the heart and immune system, increasing the risk of disease. 15. Do you own a pet? Yes = plus 2. No = 0. FACT: Peer-reviewed scientific journals substantially support longevity benefits of pet companionship. (Note: Avoid exotic pets, such as parrots, monkeys, reptiles, or rodents. These animals have been known to carry diseases that can be transmitted to humans.) 16.