US STOCKS-Wall St falls as health insurers weigh; Fed meeting eyed
* Humana declines as hospital admissions pick-up
* UnitedHealth is the biggest drag on the Dow
* Higher oil prices weigh on airline stocks
* First-qtr GDP growth lower-than-expected
* Indexes down: Dow 0.7 pct, S&P 0.6 pct, Nasdaq 0.9 pct (Updates to early afternoon, changes comment)
By Tanya Agrawal
April 29 (Reuters) - U.S. stocks fell sharply in early afternoon trading on Wednesday, led by health insurers after Humana reported an unexpected pick-up in hospital admissions in March and April.
Nine out of the 10 major S&P 500 sectors were down, with the health index's 1.2 percent fall being the steepest.
Humana shares fell 7 percent to $168.28, making them the second biggest loser on the S&P 500. The insurer's statement also hit shares of rivals Aetna, Anthem and UnitedHealth, whose 4.5 percent fall to $112.33 made it the biggest drag on the Dow. Continuación...