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Like many other medical conditions, obesity is the result of an interplay between environmental and genetic factors. [2] [3] Studies have identified variants in several genes that may contribute to weight gain and body fat distribution, although only in a few cases are genes the primary cause of obesity.
Genetic correlations are scientifically useful because genetic correlations can be analyzed over time within an individual longitudinally [41] (e.g. intelligence is stable over a lifetime, due to the same genetic influences – childhood genetically correlates = with old age [42]), or across diagnoses, allowing discovery of whether different ...
To support the hypothesis that core genes play a smaller than expected role, the authors describe three main observations: the heritability for complex traits is spread broadly, often uniformly, across the genome; genetic effects do not appear to be mediated by cell-type specific function; and genes in the relevant functional categories only ...
A study presented at the Digestive Disease Week 2024 conference examined 84 people with obesity or other weight management issues in order to investigate how genetics plays a role in weight loss ...
Researchers suggest a few reasons for this: One is the "set point" theory, which posits that your body will fight to maintain the same weight through metabolic adaptations. These adaptations ...
On average obese people have a greater energy expenditure than normal weight or thin people and actually have higher basal metabolic rates. [45] [46] This is because it takes more energy to maintain an increased body mass. [47] Obese people also underreport how much food they consume compared to those of normal weight. [48]
Nutritional genomics, also known as nutrigenomics, is a science studying the relationship between human genome, human nutrition and health. People in the field work toward developing an understanding of how the whole body responds to a food via systems biology, as well as single gene/single food compound relationships.
“Hormonal shifts during [certain life stages] may influence hunger signals in the body,” Dr. Stanford says. There are three major times where you might see weight changes: When you first start ...