In pursuit of the lost taste of chocolate from Redhead's blog

One of the side-effects of chemotherapy in cancer patients is dysgeusia, an impaired sense of taste that can leave a patient's favorite foods, such as chocolate, with no flavor at all.

Source: http://feeds.reuters.com/~r/reuters/lifestyle/~3/qlNCFVX3us4/in-pursuit-of-the-lost-taste-of-chocolate-idUSKCN1R91N0