Suppose A new study published in a reputable medical journal suggests that a certain type of exercise can significantly reduce the risk of heart disease in middle-aged adults. The study, conducted over a span of 5 years with a large sample size, has drawn attention from health experts and the general public alike. Many are now considering incorporating this specific exercise into their fitness routines to improve their cardiovascular health.
Can we infer that "The study focused on the effects of diet on heart disease."? Yes, no, or maybe?