It might be your preference to crack open a bottle of red wine at the end of a hard day but you may be better off pouring a pint. Researchers at the German Cancer Research Centre in Heidelberg have discovered that beer contains a powerful molecule that helps protect against breast and prostate cancers. Found in hops, the substance called xanthohumol blocks the excessive action of testosterone and oestrogen. It also helps to prevent the release of a protein called PSA which encourages the spread of prostate cancer. Scientists have long known that substances in hops help to block oestrogen....