Elevated lipoprotein (a) levels boost cardiovascular disease risk for some

They offer guidelines for drug therapy that could harm digestive tract

But it's not clear if the popular extract would be effective in humans

But Italian researchers warn only the lowest-risk patients can benefit

They had 32% more microbleeds in several different areas, study finds

Small study finds their levels correlate with cardiovascular trouble

Compression ultrasound similar to more expensive whole-leg color ultrasound, study finds

50% reduction in risk seen 2 years later in Canadian study

However, treatment does not slow disease progression, researchers say

Preoperative use was well-tolerated without adverse respiratory effects, study finds

They face twice the risk of second cardiac event 1 to 2 years later

Large study found younger women taking it for a longer time did have higher risk

That raises risk of death from hemorrhagic stroke, researchers say

Device approved in Europe, still in clinical trials in U.S.