Nov 20, 2015 01:50 PM EST By Rashmi Kalia, UniversityHerald Reporter

A new study has suggested that the definition of healthy foods may differ from one person to another, Modern Readers reports.

The study reveals that some foods may be healthy for some people, while the same foods may cause others to gain weight.

"The first very big surprise and striking finding that we had was the very vast variability we saw in people's response to identical meals," said Weizmann Institute of Science researcher Eran Segal.

"Most dietary recommendations that one can think of are based on one of these grading systems; however, what people didn't highlight, or maybe they didn't fully appreciate, is that there are profound differences between individuals - in a few cases, individuals have [the?] opposite response to one another, and this is really a big hole in the literature", said Eran Segal, according to Herald Voice.

For the study, Segal and his team of researchers studied about 800 people. Every participant was made to wear a blood sugar monitor to track his or her blood sugar level every five minutes for a week.

The researchers also took the stool samples of the participants to analyze their gut microbiome. They kept a record of all the foods they ate during that one week.

"There are profound differences between individuals - in some cases, individuals have opposite responses to one another - and this is really a big hole in the literature," Segal observed.

The study suggests that the conventional recommendations for food do not apply to everybody and that overweight individuals are usually blamed more than they should for overeating or not living a healthy lifestyle.

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