Suppose A recent study published in a leading medical journal found that regular exercise is associated with a reduced risk of developing dementia in later life. The study followed a large population of older adults over a period of 10 years and found that those who engaged in physical activity at least three times a week were significantly less likely to be diagnosed with dementia.
Can we infer that "All older adults who exercise regularly will never develop dementia."? Yes, no, or maybe?