A food is considered hydrophilic if it fills up with water and, in turn, fills you up, satisfying your appetite. The term originated from the Greek words for water (hydro) and friendship (philia).
If losing weight is a goal for you, then you want to make sure you get some soluble (water-absorbing) fiber in your diet, too. Hydrophilic (water-loving) fibers dissolve and form a gel in the intestines. The gel helps steady blood sugar, which in turn stops food cravings and makes us feel full longer. Being well hydrated also aids digestion.