<qa>  What is the second group given a placebo dairy product?Forty patients will be randomized between two groups of each 20 patients. After an individual checkup and a run-in period of 2 weeks, the one group will receive the phospholipid enriched dairy product and the second group will be given a placebo dairy product over two month. A wash out-period of 4 weeks will follow, and the patients will consume the contrary dairy products over two month after a 2-week run-in period again. 