It’s been rather warm in my neck of the woods lately, which prompted me to make sure I am drinking enough water. For many reasons, the Longevity Lifestyle Matters program encourages the use of pure water (some prefer a squirt of lemon juice in it) as one’s beverage of choice. For example, more than three-quarters of your brain is composed of water—if everything is going well—and it needs water to carry out its myriad functions successfully. But there is much more. Recent studies by Ruepeng An and John McCaffrey of the University of Illinois at Urbana-Champaign, published in the Journal of Human Nutrition and Dietetics, the official journal of The British Dietetic Association Ltd, found something else that many may find very interesting. The goal of their study was to examine plain water consumption in relation to the use of beverages that add calories as well as the quality of food ingested among adults in the United States. More tomorrow.