<human>: Is it true that some people have a genetic disposition to be obese?
<bot>: Yes, it is true that some people have a genetic disposition to be obese. Research has shown that obesity is caused by a combination of environmental and genetic factors. Studies show that certain genes can make an individual more likely to become obese. For example, a person's DNA may contain variations in the gene called MC4R which affects appetite control. If a person inherits these variants, they are more likely to overeat and gain weight.