The breast is a fatty glandular tissue composed of about 20 mammary glands. Between the mammary glands are connective tissues and fat, which separate each gland into many small lobules. Each mammary gland consists of ducts and alveoli. The alveoli are the parts that secrete milk and are mostly well-developed during pregnancy. The main openings of the ducts are on the nipple, and each nipple has about 15 duct openings. The entire breast is enveloped by a layer of fat. Because the fat is relatively thick, the breast is full and elastic. Around the nipple is a circular, brownish area of skin called the areola. The areola has sebaceous glands that secrete sebum to moisturize the nipple and areola.
To promote breast development during puberty and prevent mammary atrophy in middle and old age, one should eat foods rich in vitamin E and those that are beneficial to hormone secretion, such as cabbage, cauliflower, sunflower seed oil, and rapeseed oil. Vitamin B complex is also beneficial to hormone synthesis and is found in foods such as whole grains, legumes, milk, pork liver, beef, and mushrooms. Hormones play an important role in breast development and in maintaining its fullness and elasticity. Thin individuals who want to develop fuller breasts should also eat more high-calorie foods such as lean meats, eggs, peanuts, sesame seeds, walnuts, legumes, and vegetable oils. As calories are stored in the body, the thin body becomes fuller, and at the same time, the breasts also become fuller and more elastic due to the accumulation of fat. Placenta has a nourishing and strengthening effect and can promote the development of female mammary glands, reproductive organs, and ovaries. It can turn white hair black and make women with deficiency of both qi and blood, who are thin, have a dull complexion, and have underdeveloped breasts, become rosy-lipped and white-toothed, with a peach-blossom-like complexion and full breasts.