Human
In general, humans can survive for two to eight weeks without food, depending on stored body fat. Survival without water is usually limited to three or four days. About 36 million humans die every year from causes directly or indirectly related to starvation. Childhood malnutrition is also common and contributes to the global burden of disease. However global food distribution is not even, and obesity among some human populations has increased rapidly, leading to health complications and increased mortality in some developed, and a few developing countries. Worldwide over one billion people are obese, while in the United States 35% of people are obese, leading to this being described as an "obesity epidemic." Obesity is caused by consuming more calories than are expended, so excessive weight gain is usually caused by an energy-dense diet.
Waseda University
On October 21, 2007, Waseda University celebrated its 125th anniversary. Ōkuma often talked about the "125 years of life" theory: "The lifespan of a human being can be as long as 125 years. He will be able to live out his natural lifespan as long as he takes proper care of his health", because "physiologists say that every animal has the ability to live five times as long as its growth period. Since a man is said to require about 25 years to become fully mature, it follows that he can live up to 125 years of age." This theory propounded by Ōkuma was very popular and often referred to in the media of the time.