Excess oil is slippery slope

Braised pork, boiled fish, roast duck, fried chicken - the thought is enough to make anyone's mouth water. Until recently, Zhang Yingying would have been among them.

But recently, her friends have noticed that Zhang has practically become vegetarian because she refuses to eat meat or vegetables if they've been cooked in an excessive amount of oil.

The change came when Zhang received a health report that suggested she is slightly overweight and has hyperlipidemia, a high level of fat in her bloodstream.