Many studies -- though not all -- have concluded that low levels can have subtle negative effects as well if certain fish are a major part of the diet.
Some researchers now wonder whether Zetia may have subtle, negative effects that counteract its LDL-lowering ability.
Despite this, subtle negative effects on primary production were detected using a modelling approach, being the impact lower on phytoplankton communities dominated by diatoms.
Our findings suggest that the amphibian pheromonal system is one of the systems subject to subtle negative effects of environmental chemicals.
The conclusions of Boersma and Lanting were: "These data give evidence that prenatal exposure to PCBs do have subtle negative effects on neurological and cognitive development of the child up to school-age.
Presenting genetic findings in such a way--with even subtle negative connotations--can have wide-ranging effects.
That's a negative effect".
The negative effect of the mechanism outweighed its positive effect".
"We have seen no negative effect internally, no negative effect on the stock market.
