The guidelines also establish ranges (called acceptable macronutrient distribution ranges or AMDR) for fat, carbohydrates and protein, instead of exact percentages of calories or numbers of grams. The report maintains that since all three categories serve as sources of energy, they can, to some extent, substitute for one another in providing calories.

While defended by those cultures in which it constitutes a tradition, FGC is opposed by many medical and cultural organizations on the grounds that it is unnecessary and harmful. Short term health effects may include hemorrhage, infection, sepsis, and even result in death, while long term effects include dyspareunia, dysmenorrhea, vaginitis and cystitis.[79] In addition FGC leads to complications with pregnancy, labor and delivery. Reversal (defibulation) by skilled personnel may be required to open the scarred tissue.[80] Amongst those opposing the practice are local grassroots groups, and national and international organisations including WHO, UNICEF,[81] UNFPA[82] and Amnesty International.[83] Legislative efforts to ban FGC have rarely been successful and the preferred approach is education and empowerment and the provision of information about the adverse health effects as well the human rights aspects.[11]

Getting enough water also is important. Many experts recommend at least eight 8-ounce glasses of water daily—more if you exercise frequently or are exposed to extremes of heat and cold. The 2010 Dietary Guidelines for Americans emphasize drinking more water and other calorie-free beverages, along with fat-free or low-fat milk and 100 percent fruit juices, instead of calorie-packed regular sodas.