A new study says, eating 'everything in moderation' may in fact worsen metabolic health opposing an accepted opinion and comparing it to eating a smaller amount of healthy food.

According to study first author Marcia C de Oliveira Otto, assistant professor at The University of Texas Health Science Centre at Houston, US, "eating everything in moderation" has been a very old nutritional suggestion even though without much further observation and supporting evidence in population,

The researchers measured diet diversity all the way through dissimilar measures using the facts from 6,814 participants.

The measurement includes the total count or the amount of different foodstuff eaten in a week, evenness or the allocation of calories across different foods eaten, and dissimilarity or the distinction in food aspect related to metabolic health similar to fiber, sodium or trans-fat substance.

Five years after the beginning of the study, the researchers assessed how diet diversity was correlated to the transformation of weight circumference and with beginning of Type 2 diabetes 10 years soon after.

The study highlighted that the vital sign of central fat and metabolic health is the measurement of waist circumference. The researchers had found out that additional diversity in the diet was not related to healthier effect.

It is all because more central weight increase was experienced by those individuals who had the most food dissimilarity, having a 120 percent bigger enhancement in waist circumference than those participants who have lowest food dissimilarity.

According to Otto, "An unexpected finding was that participants with greater diversity in their diets, as measured by dissimilarity, actually had worse diet quality. They were eating less healthy foods, such as fruits and vegetables, and more unhealthy foods, such as processed meats, desserts and soda,"

"This may help explain the relationship between greater food dissimilarity and increased waist circumference," Otto further explained.