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- Infants have been breast-fed since the beginning of humanity.
Only since the 20th century have reasonable alternatives to breastfeeding
become available.
- Alternatives to breastfeeding include:
- Modified mammalian milk
(cow's milk based formula became available only in the 20th century).
- Unmodified mammalian milk (such as cows milk or goat milk)
can cause metabolic problems in the young infant.
- Grain or legume based beverages
- soy milk based formula (only available recently).
- other gruels based on carbohydrates are usually low in fat
and protein and do not support adequate infant growth.
- Wet nurse - a woman who nurses another's baby:
- many upper class women hired wet nurses during
various periods of history.
- infants orphaned due to maternal death have been wet-nursed.
- women worked as wet nurses for pay.
- Inability to keep non-human milk clean led to very high infant
mortality rates until the 20th century.
This is still true in many parts of the developing world.
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