For other people, how their blood levels change will be different each time they exercise.

She added, "There isn't any good data on how much fish it takes to get to a certain blood level."

The average American has a blood level of 7 parts per trillion.

Alcohol may also affect your blood levels of this drug.

Do eat something before or with alcoholic drink, but remember that nothing will keep blood levels low!

We don't know yet what his blood level was.

High blood levels of antioxidants were associated, in the 1980s, with longer life.

"The blood levels of the drug increase at least twofold," she said.

Researchers measured blood levels of these nutrients in 104 men and women, whose average age was 87.

Children, pregnant women, and older adults may need to have their blood levels checked more often than other people.