The term castration is sometimes also used to refer to the removal of the ovaries in the female, otherwise known as an oophorectomy or, in animals, spaying. Estrogen levels drop precipitously following oophorectomy, and long-term effects of the reduction of sex hormones are significant throughout the body.
Grains, beans, vegetables and nuts all contain glucose, but not typically very much. Usually bread contains 0.5 gram of glucose or less per 1-ounce slice. Navy or pinto beans also offer less than a half-gram of glucose for a 1-cup serving.
Many foods naturally contain little or no sugar. Protein foods containing less than 1 gram of sugar per serving include meat, poultry, seafood, eggs, pinto beans, kidney beans, tofu, sunflower seeds, pumpkin seeds, walnuts and Brazil nuts. Beverages that are naturally sugar free include black coffee, tea and water.