BB"The little anthropological evidence documented suggests it is possible. In the 1896 compendium Anomalies and Curiosities of Medicine, George Gould and Walter Pyle catalogue several instances of male nursing being observed. Among them was a South American man, observed by Prussian naturalist Alexander von Humboldt, who subbed as wet nurse after his wife fell ill as well as male missionaries in Brazil that were the sole milk supply for their children because their wives had shriveled breasts. More recently, Agence France-Presse reported a short piece in 2002 on a 38-year-old man in Sri Lanka who nursed his two daughters through their infancy after his wife died during the birth of her second child."
https://www.scientificamerican.com/article/strange-but-true-males-can-lactate/
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