[addaon]

But that's not what the study tested. The study showed that both calorie restriction, and calorie restriction combined with almost all calories from oats, reduced cholesterol; but that the effect was more durable for the latter case. No data was gathered on eating oats without calorie restriction in this study.

[awesome_dude]

It seems more complicated than that - the "Oats only" people were only on that regime for two days, not an extended period of time.

Also the paper says that the "Oats only" people were allowed to eat other fruits and vegetables with their meals.