By Amruta Khandekar (Reuters) -European shares fell for a fourth straight session on Wednesday, with investors on edge as fears of a global recession picked up steam, although the losses were limited by the gains in the healthcare stocks. The region-wide STOXX 600 was down 0.2%, taking cues from a dismal trading session on Wall Street overnight after big U.S. banks cautioned of a likely recession next year. “There is a sense of nervousness and jitteriness in the markets today. The sell-off on Wall Street last night has permeated across global markets,” said Victoria Scholar, head of investment…