Informed Health Online -- Once the baby arrives, many new mothers want to return to their former weight quickly – just like film stars who appear in the media in bikinis just weeks after giving birth. But according to the German Institute for Quality and Efficiency in Health Care (IQWiG), women should not put themselves under too much pressure straight away. In information published today on Informed Health Online, the Institute also warns that overdoing early weight loss attempts could have a negative impact on breastfeeding.