Obesity: Difference between revisions

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Studies that have focused on inheritance patterns rather than on specific genes have found that 80% of the offspring of two [[parental obesity|obese parents]] were also obese, in contrast to less than 10% of the offspring of two parents who were of normal weight. Different people exposed to the same environment have different risks of obesity due to their underlying genetics.

The [[thrifty gene hypothesis]] postulates that, due to dietary scarcity during human evolution, people are prone to obesity. Their ability to take advantage of rare periods of abundance by storing energy as fat would be advantageous during times of varying food availability, and individuals with greater adipose reserves would be more likely to survive [[famine]]. This tendency to store fat, however, would be maladaptive in societies with stable food supplies.~~{{medcn|date=July 2021}}~~ This theory has received various criticisms, and other evolutionarily-based theories such as the [[drifty gene hypothesis]] and the [[thrifty phenotype|thrifty phenotype hypothesis]] have also been proposed.~~{{medcn|date=July 2021}}~~

The [[thrifty gene hypothesis]] postulates that, due to dietary scarcity during human evolution, people are prone to obesity. Their ability to take advantage of rare periods of abundance by storing energy as fat would be advantageous during times of varying food availability, and individuals with greater adipose reserves would be more likely to survive [[famine]]. This tendency to store fat, however, would be maladaptive in societies with stable food supplies. This theory has received various criticisms, and other evolutionarily-based theories such as the [[drifty gene hypothesis]] and the [[thrifty phenotype|thrifty phenotype hypothesis]] have also been proposed.

===Other illnesses===

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 Studies that have focused on inheritance patterns rather than on specific genes have found that 80% of the offspring of two [[parental obesity|obese parents]] were also obese, in contrast to less than 10% of the offspring of two parents who were of normal weight. Different people exposed to the same environment have different risks of obesity due to their underlying genetics.
-The [[thrifty gene hypothesis]] postulates that, due to dietary scarcity during human evolution, people are prone to obesity. Their ability to take advantage of rare periods of abundance by storing energy as fat would be advantageous during times of varying food availability, and individuals with greater adipose reserves would be more likely to survive [[famine]]. This tendency to store fat, however, would be maladaptive in societies with stable food supplies.{{medcn|date=July 2021}} This theory has received various criticisms, and other evolutionarily-based theories such as the [[drifty gene hypothesis]] and the [[thrifty phenotype|thrifty phenotype hypothesis]] have also been proposed.{{medcn|date=July 2021}}
+The [[thrifty gene hypothesis]] postulates that, due to dietary scarcity during human evolution, people are prone to obesity. Their ability to take advantage of rare periods of abundance by storing energy as fat would be advantageous during times of varying food availability, and individuals with greater adipose reserves would be more likely to survive [[famine]]. This tendency to store fat, however, would be maladaptive in societies with stable food supplies. This theory has received various criticisms, and other evolutionarily-based theories such as the [[drifty gene hypothesis]] and the [[thrifty phenotype|thrifty phenotype hypothesis]] have also been proposed.
 ===Other illnesses===