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The WFP is initially providing each family of seven with 2100 kilocalories a day for a month, and may consider other forms of aid like cash in the coming weeks, Kropf said.

Even in the harsh, dry savanna of northern Tanzania, Hadza men and women acquire 500 to 1,000 kilocalories of food an hour, on average.

In the developed world, embracing an average daily 2,300-kilocalorie diet instead of consumption that often reaches more than 3,000 kilocalories lessens food waste in the first place.

And if you subtract 500 kilocalories from your basal metabolic rate and limit your daily energy intake to this value, you will definitely consume less energy than you use.

According to government figures, we currently consume an average of 2,130 kilocalories a day, a figure that appears to include sweets and alcohol.