How to feed 9,000 million people in 2050?

How to feed 9,000 million people in 2050? https://i0.wp.com/www.eresviral.com/wp-content/uploads/2018/11/¿Cómo-alimentar-a-9.000-millones-de-personas-en-2050.jpg?fit=219%2C146&ssl=1

How to feed 9,000 million people in 2050?







According to WWF, the biggest environmental problem in the world is the destruction of wildlife and the habitat of plants. A large part of the devastation is due to the demands of a constantly growing human population.



According to the scientific community, the world population could stabilize at around 9,000 million in a few years, compared to just over 7.6 billion today.



But an average person in the future will require more food than today. Changes in eating habits, food waste, increased height and body mass and demographic transformations are some of the reasons.



Professor Daniel B. Müller and his colleagues Felipe Vásquez and Gibran Vita analyzed the population changes of 186 countries between 1975 and 2014. "We studied the effects of two phenomena. One is that people on average have become taller and heavier. The second is that the average population is aging, "says Vita.



The first phenomenon contributes to a greater demand for food. The second counteracts the previous one. An average adult in 2014 was 14% heavier, approximately 1.3% higher, 6.2% older and needed 6.1% more energy than in 1975. Researchers expect this trend to continue in Most countries.







Obesity. (Photo: UGR)



"An average global adult consumed 2465 kilocalories per day in 1975. In 2014, the average adult consumed 2615 kilocalories," says Vita.

Worldwide, human consumption increased by 129% during this period of time. The population growth was responsible for 116%, while the increase in weight and height represented 15%. Older people need a little less food, but the aging of the population produces only 2% less consumption.



However, there are considerable differences between countries. The increase in weight per person from 1975 to 2014 ranged from 6 to 33 percent, and the increase in energy requirements varied between 0.9 and 16 percent.



An average person in Tonga weighs 93 kilos. An average Vietnamese weighs 52 kilos. This means that the people of Tonga need 800 kilocalories more each day, according to information from the Norwegian University of Science and Technology collected by DiCYT.



Some countries are changing rapidly. In Santa Lucia, in the Caribbean, the average weight increased from 62 kilos in 1975 to 82 kilos 40 years later.



"Previous studies had not taken into account the growing demands of increasingly large individuals and older societies when calculating the future food needs of a growing population," says Vásquez.



Most studies estimate that the average adult's food needs remain constant over time and fairly similar in all nations. But it's not like that.



"These assumptions can lead to errors in the evaluation of how much food we will really need to meet future demand," says Vásquez.



This study provides relevant information for the Food and Agriculture Organization of the United Nations (FAO), which leads the fight to guarantee food security. (Source: DICYT)

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