Which of the following societal changes is NOT typically cited as a driver of the rise in population obesity rates since 1970?

• A. Widespread reductions in the genetic predisposition to higher BMI across the population over a few decades
• B. Increased frequency of meals eaten outside the home and fast-food consumption
• C. Larger standard portion sizes and increased availability of energy-dense processed foods
• D. More sedentary occupations and leisure time activities reducing daily energy expenditure

Answer: (A)