US STOCKS-Wall St drops as healthcare stocks weigh
* Oil prices pare gains
* Tempur Sealy drops on disappointing forecast
* Indexes down: Dow 0.12 pct, S&P 0.23 pct, Nasdaq 0.24 pct (Adds details, comments, updates prices)
By Yashaswini Swamynathan
Sept 28 (Reuters) - U.S. stocks reversed course to trade lower in a choppy market on Wednesday, dragged down by healthcare stocks and as oil prices pared gains.
Bristol-Myers and Amgen weighed the most on the S&P 500 healthcare sector, which fell 0.45 percent. The index had risen 0.7 percent on Tuesday.
Oil prices, which rallied as much as 3 percent earlier in the day, gave up much of those gain as data showed a large build in U.S. gasoline inventories.
Adding to the downbeat market sentiment was the lowering of the 2016 U.S. growth forecast by the International Monetary Fund.
In a testimony before a Congressional committee, Federal Reserve Chair Janet Yellen said the central bank was considering changes to the annual stress tests given to U.S. banks. Continuación...