Articles on Calories

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Two foods may have the same number of calories, but other food factors and your microbes influence which calories your body uses more of. Martin Barraud/OJO Images via Getty Images

Is weight loss as simple as calories in, calories out? In the end, it’s your gut microbes and leftovers that make your calories count

Your gut microbes have a lot to say about how many calories you consume and how effectively your body metabolizes them.
The Nutrition Facts label is designed to meet shifting dietary trends and public health goals. NoDerog/iStock via Getty Images Plus

Nutrition Facts labels have a complicated legacy – a historian explains the science and politics of translating food into information

The process of converting food into nutritional information is more than just a scientific process. It involves many political and technical compromises that continue to shape the food industry today.
The book includes haunting photos from inside the ghetto, along with its record of the medical effects of starvation. 'Maladie de Famine," American Joint Distribution Committee

Warsaw Ghetto’s defiant Jewish doctors secretly documented the medical effects of Nazi starvation policies in a book rediscovered on a library shelf

The story behind the research can be as compelling as the results. Recording the effects of starvation, a group of Jewish doctors demonstrated their dedication to science – and their own humanity.
The Tour de France is one of the most physically taxing sporting feats imaginable. Phillippe Lopez/AFP via Getty Images

Tour de France: How many calories will the winner burn?

Riders in the 2022 Tour de France will ride more than 2,100 miles (3,400 km) over the 21 flat and mountainous stages of the race. And they will burn an incredible amount of energy while doing so.

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