U.S. regulators have rejected a long-acting injectable form of Eli Lilly and Co's blockbuster schizophrenia drug Zyprexa, the company said Thursday, sending its shares down almost 2 percent.

As the democratic presidential candidates prepare to square off on health care issues at tonight's debate in Ohio, a new federal study points to accelerating growth in government spending on Medicare over the next ten years, as baby boomers become eligible for the healthcare entitlement program.

Genentech's shares soared as much as 11 percent on Monday after U.S. regulators approved its drug Avastin for the treatment of metastatic breast cancer.

Australian airline Virgin Blue Holdings missed profit estimates with a 8.8 percent fall in its first-half profit and flagged a tough environment in the second half, knocking down its shares more than 4 percent.

CSL, the world's top maker of plasma products, beat analysts' forecasts with a 36 percent rise in first-half profit, but trimmed the top end of its full-year profit forecast due to currency swings.

The New York Attorney General's Office said it plans to file suit against Ingenix, its parent UnitedHealth Group, and three additional subsidiaries, as part of an investigation into a "scheme by health insurers to defraud consumers by manipulating reimbursement rates."

Australian medical centre operator Primary Health Care reported a 23.7 percent fall in first-half net profit, hit by the interest costs of buying a 20 percent stake in its takeover target Symbion Health.

Excluding the financial sector, fourth-quarter earnings have been pretty solid so far.  But the stock market isn't paying much attention.

As the Dow, Nasdaq and S&P open the trading week in negative territory, CNBC asked the pros how to keep your investments toward the upside.

Just one day after the Fed cut interest rates by a half-point, stocks are up -- after dropping -- and economic uncertainty is resurging.  CNBC asked market experts where investors should put their money in this environment.

WellCare Health Plans, a managed care provider undergoing a federal probe, on Friday replaced Chief Executive Todd S. Farha, announced the resignations of other top executives and said its latest annual report and other filings will likely be late.

The recent market turmoil is causing many investors worry, but not every sector is plagued by nervousness.  Some sectors seem to be immune to the turmoil and others, like healthcare, seem to be thriving.

Danish headset and hearing aid maker GN Store Nord lost nearly a quarter of its market value on Tuesday after issuing a profit warning for 2007 on lower-than-expected growth at its ReSound and Netcom units.