Others raise concerns that high daily doses may increase radiation side effects that can show up years after treatment.
I suppose in the case of nutrition there are physical effects that can be measured, though; isn't this more intangible?
As it stands now, months or even years must pass before officials learn of unexpected side effects that can cost dozens or even thousands of lives.
My focus is on the effects of language on thought, but I try to concentrate on those effects that can be demonstrated scientifically.
In a person who does not have asthma, the drugs have no benefits, only the risk of side effects that can place an athlete's health at risk.
Mr. Herbert courageously directed our attention beyond the body count of war to the often hidden psychological effects that can persist long after peace treaties have been signed.
Like the cycles that govern global energy and carbon systems, public attitudes are subject to positive feedback effects that can amplify small changes and result in rapid shifts.
But like the original, it relies on high-tech science, with special effects that can follow a bullet through a body.
There are spatial effects that can make, for example, the Red Hot Chili Peppers sound as if they were performing in an empty recital hall.
"Our findings in children increasingly show real deleterious effects that can occur short-term and potentially for the rest of the child's life," Perera said.
There are many reasons to avoid LSD, but one of the most distressing side effects that can result from its chronic abuse is the flashback syndrome.
