Just in time for Thanksgiving leftovers – when it comes to losing weight, one size program does not fit all. Everybody's different, and a new study says that's why losing weight is much harder for some people.

The new findings, published in the journal Cell, show that people's bodies react to the same foods in very different ways which means just because Marie Osmond dropped 50 pounds, it doesn’t mean you will too. The conclusion suggests that tailoring diets for individuals may be the best way to help them lose weight.

Israeli researchers looked at the biomarkers in 800 people between the ages of 18 and 70, as well as monitored the participants' blood sugar levels and had them self-report their food intake, sleep, and exercise.

It was discovered that participant's blood sugar levels varied widely after they ate, and that the levels were highly variable even when researchers had the people eat the exact same meal.

Researchers say that if a diet did not work for you, it may be the diet's fault and not yours.

It's thought the differences between people are caused by the microbiome, or the trillions of bacteria that live in the gut and differ wildly from person to person.

The scientists imagine a day when they will be able to construct an effective personalized diet for each overweight individual based on the patients answers to a questionnaires and their providing a single microbiome sample.

They conclude that idea is both achievable and cost effective for the near future. (Time)

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