Why the same diets have different results on people

Scientists have a new explanation on why, despite strictly following diet guidelines, some people might be experiencing weight gain and diet related discomforts

Sometimes, even the latest and healthiest diet trends prove to be inefficient for some individuals, even if they religiously follow specific dieting rules and lead an overall healthy life.

According to new study recently published in the Cell journal, now there is a scientific explanation of why that happens.

An Israeli team of researchers has found that people’s bodies respond very differently to eating the same food. Diets have widely different impacts depending on each dieter’s body and metabolic unique characteristics.

To reach the study results, lead study authors, Dr. Eran Segal and Dr. Eran Elinav, from the Weizmann Institute of Science in Israel focused on measuring the glycemic index (GI), a key component of creating balanced diet plans that was developed to indicate how the blood sugar levels in the body varies when consuming certain foods.

So far, the GI has been generally accepted to be a fixed number. But, according to this particular study results, it turns out that it actually varies depending on each individual special features.

800 volunteer research participants were assessed through health questionnaires collected data, corporal measurements and monitoring, blood glucose tests and stool samples.

Researchers collected lifestyle and diet information into a mobile app, for a total of  46.898 participants’ meals.

Age and body mass index were found to be factors that impacted blood glucose level after food intake and volunteers had different constant responses to the exact same foods.

“There are profound differences between individuals — in some cases, individuals have opposite responses to one another”, Dr. Segal explained in the Cell article release.

Underlining the study importance, researchers pointed out that adjusting meal plans to each individual’s specific biology might just be the future of successful dieting. Exactly knowing which foods are tolerated by each individual’s unique system and which trigger negative metabolic responses may decrease the number of failed or poor diet choices.