I whanau a Fischer i Höchst i runga i te Main, inaianei he rohe taone o Frankfurt. Ko ona matua ko Dr. Eugen Fischer, Kaiwhakahaere o te umanga o Kalle & Co, Wiesbaden, me Privatdozent i te Kura Tuarua Hangarau, Stuttgart, me Anna Herdegen. I haere ia ki te kura tuatahi i Stuttgart, ana ka haere ki te "Humanistisches Gymnasium" i Wiesbaden, i matriculated i te 1899. I panui ia i te matū me te rongoa, i te Whare Wananga o Lausanne i te tuatahi, ka haere ki Marburg. I puta ia i te tau 1904, a i te tau 1908 i tohu ia mo tana M.D..
Te Whare Wānanga o Lausanne, kātahi ki Marburg