Water retention can occur due to any of the following reasons: 1  An unbalanced diet and lack of exercise. 2  Reaction to some drugs can cause fluid retention too. 3  Dehydration: as the body tries to keep the extra water. 4  Menopause is often associated with water retention in women. 5  Diseases like Thyroid, Arthritis and Varicose Veins.
Types of gallstones. Types of gallstones that can form in the gallbladder include: 1  Cholesterol gallstones. 2  The most common type of gallstone, called a cholesterol gallstone, often appears yellow in color. 3  These gallstones are composed mainly of undissolved cholesterol, but may contain other components.t's not clear what causes gallstones to form. Doctors think gallstones may result when: 1  Your bile contains too much cholesterol. 2  Normally, your bile contains enough chemicals to dissolve the cholesterol excreted by your liver.
Picture of Gallstones. There are two types of gallstones: 1) cholesterol stones and 2) pigment stones. 1  Patients with cholesterol stones are more common in the United States; cholesterol stones make up a majority of all gallstones. 2  They form when there is too much cholesterol in the bile.