News SIDS cause remains a mystery. Scientists think they may have found a promising new clue May 30, 2023May 30, 2023Nada Hassanein, USA TODAYComments Off on SIDS cause remains a mystery. Scientists think they may have found a promising new clue The cause of SIDS is unknown, but scientists are exploring a brain receptor that could be involved in a subset of infant SIDS deaths.