increasing total fruits and vegetables by 66 grams/day reduced the risk of developing type 2 diabetes

The European researchers found that increasing total fruits and vegetables by 66 grams/day reduced the risk of developing type 2 diabetes by __________ percent.

The American study found that eating at least one additional serving of whole grain cold breakfast cereal per day lowered the risk of type 2 diabetes by __________ percent.

Both studies used a large number of subjects. The study had 158,259 women and 36,525 men. Why is having a large number of participants important in research?

The Nurses’ Health Study and its offshoots (Nurses’ Health Studies II and III) have been generating data for over 40 years! Information from their participants was used by the American researchers. These studies are both longitudinal and cohort. Define both of these terms about scientific research, and discuss their usefulness.