Why do people need to consume a lot of food?

An average adult in 2014 is 14% heavier, 1.3% taller, 6.2% larger in body size than an adult in 1975.

Accordingly, people in the future will require more food due to changes in eating habits, lifestyle, tend to increase height and weight . Moreover, the world population can reach about 9 billion people in the next few years, more than the current only 7.6 billion people.

People will consume more food due to changes in their eating habits, lifestyle, tend to increase in height and weight.

"It will be more difficult to feed nine billion people by 2050 compared to today," said Gibran Vita, a scientist at the Norwegian University of Science and Technology.

In this study, experts analyzed changes in population populations of 186 countries from 1975 to 2014.

"We study the effect of the two changes. One is that the average person has now become taller and heavier. Second, the average population is aging , " Vita said.

An average adult in 2014 is 14% heavier, 1.3% taller, 6.2% larger in body size than an adult in 1975. Researchers believe that the trend This will continue for most countries.

"An average adult consumes 2,465 kilocalories per day in 1975. In 2014, consumption reached 2,615 kilocalories , " Vita said.