Context: This is the circulatory system of the soul according to many long effective remedies of the homeopathic or genre we have detailed throughout these books . Clearly acupuncture works and it has for thousands of years but only now are researches of a truly open - minded nature taking place . For that reason , mainstream medicine has concentrated on assessing and treating these medical problems during much of the twentieth century , for the most part leaving aside another integral part of the cardiovascular picture : the effect of stress on the heart , blood and blood vessels .

Question: What might be true about mainstream medicine ?
Options:
0. It 's focused on the effect of stress on the heart .
1. None of the above choices .
2. It focuses on curing every illness .
3. It only focuses on curing some illnesses .
Answer: 3