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Many studies have indicated that there is some genetic influence on body weight and composition. Researchers...

Many studies have indicated that there is some genetic influence on body weight and composition. Researchers have established a variety of theories that attempt to explain why some individuals gain weight more easily than others and why weight can be so difficult to change long-term. Choose the correct statement about theories regarding genetic influence on weight status.

a. The thrifty gene theory suggests that some individuals have a “thrifty metabolism,” which could help a person survive when food is scarce.

b. According to recent research, the FTO gene may increase feelings of satiety.

c. The set point theory indicates that bodies are meant to stay within a narrow weight range, which cannot be changed long-term.

d. Drastically reducing calorie intake causes BMR to increase, which helps individuals deviate from their “set point” for weigh

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Drastically reducing calories intake causes the BMR to decrease and not increase. Also, according to the thrifty gene theory, human have access to high calories food in today environment. In the latest research, it is proved that FTO gene was associated with increased risk of obesity through impairing central processing of satiety. Hence, option b is correct.

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