Former research have found that adult body-mass index (BMI) is 55 percent to 85 percent heritable. Genes in the area of 15q11?13 could be abnormally identified as the result of possibly a structural or functional abnormality in this chromosomal area. Currently the exact genetic culprits have not yet been specificly identified, the genetic lesion's appear to relate to hypothalamic dysfunction.

Undoubtedly, studies of the rapid expansion of the visually obvious prevalence of childhood obesity in first world countries clearly indicates genetics cannot be blamed as a predominant reason for the current jump that has been noted in recent experience. Genetic syndromes where obesity is a significant event are most unusual. Plus these usually have an linked major physical abnormality as well as mental retardation.

Dysmorphic syndromes, known as Turner's and Beckwith-Wiedemann, are generally found during infancy.

A number of research projects indicate that Genetics could possibly assist to explain a child’s reasons towards preferred foods, like sweet foods or Savoury. Perhaps we may require help determining why a child wants a shop-bought ham-burger in preference to a healthy, tasty dinner cooked by Mum at home?

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