Additionally, 3.0% of metformin users died from cancer, compared with 6.1% of comparators.
The calorie-restricted monkeys have had two cases of cancer, compared with five in the controls.
Japanese Americans have high rates of colorectal, stomach, prostate and breast cancer compared with other groups, the researchers found.
Of about 30,000 who were not screened, 196 died of breast cancer compared with 153 of about 30,000 who had mammograms.
It said the new acceptable limit exposed children to a one in 200 risk of getting cancer, compared with a one in 500 risk for adults.
"In 1994, I noticed these patients were not having cancer, compared with their relatives.
For every million black males, 860 will die from lung cancer, compared with 620 among every million white males.
In all, 136 of about 11,000 people taking Vytorin in the three trials have died of various kinds of cancer, compared with 95 out of 11,000 who took placebo or simvastatin alone.
After adjusting for multiple breast cancer risk factors, the scientists found that women who gained 55 pounds or more after age 18 had almost 1 1/2 times the risk of cancer compared with those who maintained their weight.
Last month, Amgen, which is based in Thousand Oaks, Calif., said a separate study of Aranesp showed an increased risk of death in people with anemia possibly caused by cancer, compared with a placebo treatment.
Someone who has a parent or a sibling with colorectal cancer faces about a 1-in-10 chance of developing colon cancer, compared with 1 in 20 for those with no family history.
