Yes, this is a BM is best kind of post, I do understand that there are sometimes reasons that nursing is not an option.
The U.S. Dept of Health recommends that all babies be breastfed at least one year and that it is a lucky child who can bf 2 years. The World Health Organization recommends that all babies bf for at least 2 years. Neither suggest a perfect age for weaning.
My cousin donates her BM to a human milk bank at a hospital in Denver. Having twins may qualify you to receive it. You may want to call some hospitals in your area to see if this is an option. You may still need to suppliment with formula.
You can get more information on Human Milk Banks at: http://www.4woman.gov/breastfeeding/index.cfm?page=359
This is from the U.S. Dept of Health & Human Services (www.womenshealth.gov)
HEALTH RISKS OF NOT BREASTFEEDING
Breast milk has agents (called antibodies) in it to help protect infants from bacteria and viruses. Recent studies show that babies who are not exclusively breastfed for 6 months are more likely to develop a wide range of infectious diseases including ear infections, diarrhea, respiratory illnesses and have more hospitalizations. Also, infants who are not breastfed have a 21% higher postneonatal infant mortality rate in the U.S.
Some studies suggest that infants who are not breastfed have higher rates of sudden infant death syndrome (SIDS) in the first year of life, and higher rates of type 1 and type 2 diabetes, lymphoma, leukemia, Hodgkin's disease, overweight and obesity, high cholesterol and asthma. More research in these areas is needed (American Academy of Pediatrics, 2005).
Babies who are not breastfed are sick more often and have more doctor's visits.
BENEFITS FOR BABIES:
Breast milk is the most complete form of nutrition for infants. A mother's milk has just the right amount of fat, sugar, water, and protein that is needed for a baby's growth and development. Most babies find it easier to digest breast milk than they do formula.
As a result, breastfed infants grow exactly the way they should. They tend to gain less unnecessary weight and to be leaner. This may result in being less overweight later in life.
Premature babies do better when breastfed compared to premature babies who are fed formula.
Breastfed babies score slightly higher on IQ tests, especially babies who were born pre-maturely.
BENEFITS FOR MOM:
Nursing uses up extra calories, making it easier to lose the pounds of pregnancy. It also helps the uterus to get back to its original size and lessens any bleeding a woman may have after giving birth.
Breastfeeding, especially exclusive breastfeeding (no supplementing with formula), delays the return of normal ovulation and menstrual cycles. (However, you should still talk with your doctor or nurse about birth control choices.)
Breastfeeding lowers the risk of breast and ovarian cancers, and possibly the risk of hip fractures and osteoporosis after menopause.
Breastfeeding makes your life easier. It saves time and money. You do not have to purchase, measure, and mix formula. There are no bottles to warm in the middle of the night!
A mother can give her baby immediate satisfaction by providing her breast milk when her baby is hungry.
Breastfeeding requires a mother to take some quiet relaxed time for herself and her baby.
Breastfeeding can help a mother to bond with her baby. Physical contact is important to newborns and can help them feel more secure, warm and comforted.
Breastfeeding mothers may have increased self-confidence and feelings of closeness and bonding with their infants.
Best of luck!