of pneumonia than a breastfed child. Nutritional value: Many poor mothers use less formula for the baby than is required, in order to make a container of formula last longer. As a result, some infants receive inadequate nutrition from weak solutions of formula. Breast milk has many natural benefits lacking in formula. Nutrients and antibodies are passed to the baby while hormones are released into the mother's body. Breastfed babies are protected, in varying degrees, from a number of illnesses, including diarrhea, bacterial meningitis, gastroenteritis, ear infection, and respiratory infection. Breast milk contains the right amount of the nutrients essential for neuronal (brain and nerve) development. The bond between baby and mother can be strengthened during breastfeeding. Frequent and exclusive breastfeeding can also delay the return of fertility, which can help women in developing countries to space their births. The World Health Organization recommends that, in the majority of cases, babies should be exclusively breast fed for the first six months, and then given complementary foods in addition to breastfeeding for up to two years or beyond. Preserving milk supply: The practice of relying on free formula in maternity wards frequently means the mother loses the ability to make her own milk and must buy formula (as stated in the following paragraph). Advocacy groups and charities have accused Nestlé of unethical methods of promoting infant formula over breast milk to poor mothers in developing countries. For example, IBFAN claims that Nestlé distributes free formula samples to hospitals and maternity wards; after leaving the hospital, the formula is no longer free, but because the supplementation has interfered with lactation, the family must continue to buy the formula. IBFAN also alleges that Nestlé uses "humanitarian aid" to create markets, does not label its products in a language appropriate to the countries where they are sold, and offers gifts and sponsorship to influence health workers to promote its products. The company not only made use of mass media promotion (e.g. billboards and posters) and sample distributions, they also had sales people dressed as so-called “milk nurses” to visit mothers in hospital and at their home to praise formula and its benefits. Nestlé justified its actions by rejecting the responsibility for e.g. the lack of clean water in many developing countries and further argued with freedom of consumer choice, which in the company’s opinion allows for formula products to be sold in developing markets.