Good morning. Coffee for you? U.S. researchers are taking a cautiously positive view of the dark and delicious stimulant as they review the value of certain foods in their regular five-year program of such studies. Alert readers will be aware of many works in recent years which suggest that a Cup of Joe can be useful in forestalling cardiovascular disease, type 2 diabetes, Parkinson’s disease and a couple of cancers, including breast and prostate cancer. It seems to be true, the Americans are saying. At the same time the scientists are urging a careful approach. They say we should enjoy our cup or two of coffee but not start taking it like medicine.