Many smart philosophers mention that the best way to keep young and healthy is to put food in your mouth that is healing: e.g. treat your food as your medicine while your medicine as your food 请问:不太能理解为什么要将while改成and，冒号后面的句子如果改成and，其意思不就是把你的食物当做药来对待，且把你的药当做食物来对待吗？后半句把药当做食物来对待不就是让人们多吃药吗？(前文提出了长期服用止痛药的弊端)