Bloch received the Nobel Prize in Medicine or Physiology in 1964 ( joint with Feodor Lynen ) for discoveries concerning the mechanism and regulation of the cholesterol and fatty acid metabolism .
In 1964 , Bloch was the recipient of the Nobel Prize in Medicine or Physiology which he shared with Feodor Lynen . They won the prize `` for their discoveries concerning the mechanism and regulation of the cholesterol and fatty acid metabolism '' .