Physical inactivity accounts for approximately what percentage of Type II Diabetes?

• A. 10%
• B. 27%
• C. 40%
• D. 60%

Answer: (B)

The main idea here is the population-attributable fraction for a risk factor in a chronic disease. Physical inactivity is a major modifiable driver of Type 2 diabetes because inactivity worsens insulin sensitivity and glucose control, contributing to the development of the condition at the population level.

Estimates commonly cited in public health literature place the preventable burden of Type 2 diabetes due to physical inactivity at about 27%. In other words, if people were sufficiently active, roughly a quarter of Type 2 diabetes cases could be avoided, assuming a causal link and other factors remaining constant. This makes the 27% figure the best fit for the question.

The other percentages are less consistent with typical guidance on this topic: 10% underestimates the impact, while 40% or 60% overstate the share of cases linked to inactivity given current evidence. Regular physical activity lowers risk by improving insulin sensitivity and glucose uptake, reinforcing why inactivity is such a strong, actionable risk factor.