Despite all this, many researchers are not convinced. They point to the fact that many afflictions have been known to disappear spontaneously, with or without a daily dose of laughter. They also say that while optimism in general does seem to be related to better health, it is hard to tell which comes first.
盡管如此，許多研究人員并沒有被說服。他們指出，事實(shí)上不論病人是否接受日劑量的笑療，很多苦惱都會(huì)自動(dòng)消失。他們也表示，雖然一般看來樂觀的心態(tài)確實(shí)與健康有聯(lián)系，但是很難確定這兩者哪個(gè)在先。
盡管如此，許多研究人員并沒有被說服。他們指出，事實(shí)上不論病人是否接受日劑量的笑療，很多苦惱都會(huì)自動(dòng)消失。他們也表示，雖然一般看來樂觀的心態(tài)確實(shí)與健康有聯(lián)系，但是很難確定這兩者哪個(gè)在先。