Lee Berk at Loma Linda University in California thinks so.
加利福尼亚洛马琳达大学的李·伯克认为是可以的。
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Even just anticipating something funny increases anti-viral, anti-tumour defences, reports Dr. Lee Berk of the School of Medicine at Loma Linda University.
Loma Linda大学医学院的Lee Berk博士报道说,即使只是想想有趣的事情,也会人体增强抗病毒、抗肿瘤的防御机能。