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Monogenic obesity is excess weight caused by a mutation in a single gene, as opposed to syndromic obesity not tied to a single gene variation and most obesity, which is caused by multiple genetic and environmental risk factors. Monogenetic obesity mostly affects the hypothalamus and leptin–melanocortin system (see hypothalamic obesity ...
Absence of obesity (although overweight or obese people can get MODY) or other problems associated with type 2 diabetes or metabolic syndrome (e.g., hypertension, hyperlipidemia, polycystic ovary syndrome). [7] Insulin resistance very rarely happens. [8] Cystic kidney disease in patient or close relatives.
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.
Symptoms of Obesity Obesity symptoms can differ greatly from one person to another. But most symptoms show up because bodily systems have to work harder due to the excess weight.
Syndromic obesity (SO) refers to obesity when it occurs as part of a syndrome, often along with intellectual disability. Often syndromic obesity is mediated by abnormal development of the hypothalamus (see hypothalamic obesity). Known types of syndromic obesity include some types of monogenic obesity and: [1] [2] Prader Willi syndrome; Bardet ...
For years, medical experts have defined obesity primarily based on body mass index, which measures stored fat by calculating height and weight, to determine a person’s health risks. Major public ...
While obesity is an independent risk factor for type 2 diabetes that may be linked to lifestyle, obesity is also a trait that may be strongly inherited. [21] [22] Other research also shows that type 2 diabetes can cause obesity as an effect of the changes in metabolism and other deranged cell behavior attendant on insulin resistance. [23]
Conversely, damage to this receptor has been shown to result in morbid obesity, and is the most commonly known cause of monogenic morbid obesity. [22] Mutation in an allele of the melanocortin-4 receptor causes 2-3% of childhood and adult obesity.