Breastfeeding a child until 3 or 4 years of age is abnormal and bad for the child, causing an overdependent relationship between mother and child.
Not true !
Breastfeeding for 2-4 years was the rule in most cultures since the beginning of human time on this planet. Only in the last 100 years or so has breastfeeding been seen as something to be limited. Children nursed into the third year are not overly dependent. On the contrary, they tend to be very secure and thus more independent. They themselves will make the step to stop breastfeeding (with gentle encouragement from the mother), and thus will be secure in their accomplishment.
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