By Lewis Krauskopf NEW YORK (Reuters) -U.S. stock investors worried geopolitical uncertainty and the Federal Reserve’s fight against inflation could dent economic growth are heading for defensive sectors they believe can better weather turbulent times and tend to offer strong dividends. The healthcare, utilities, consumer staples and real estate sectors have posted gains so far in April even as the broader market has fallen, continuing a trend that has seen them outperform the S&P 500 this year. Their appeal has been particularly strong in recent months, as investors worry the Fed will choke t…