Ethical? 
I wonder if breastfeeding an adult is ethical or not P   
please fix the references: I tried but failed   
Depends on the questioner and his own ethics. Not an uninteresting question because from medical point of view nothing points against it. From religious view, christian: Proverbs 5:19 (direct translated bible) allows it, sunni islam: several fatwas allow it. However, in the 19th century several woman found breastfeeding of babies sick and harmful.  —Preceding unsigned comment added by 84.190.109.114