The study researchers used a computer program that revealed the colon in three dimensions.

The study researchers caution that the results do not show a cause-and-effect relationship between happiness and longer life.

In the study researchers measured morning testosterone levels in 12 healthy men between ages 64 and 74.

In one study researchers followed infants during their first year of life; in the other, adults were tracked for four years.

Dr. Ford, of the cancer institute, defended the institute's actions, saying that the data had been expeditiously provided to the study researchers.

Why fruits and vegetables would affect various parts of the colon differently is not known, the study researchers write.

Based on those trials, study researchers expected about 70% of patients in each group would achieve remission of their symptoms.

In one study researchers found that some of the patients had abnormalities in their thalamus.

The study researchers recruited 269 healthy adults who were ages 45 to 75.

The same results held up in a similar, real-life environment constructed by the study researchers.