A meta study of nine randomized studies did not show that whole grains would reduce cardiovascular disease, or lower blood cholesterol or blood pressure. In case you didn't know, the American Heart Association pushed whole grains/carbs for decades because its chairman Ancel Keys was sponsored by Proctor & Gamble, and that's why you are fat.
http://www.cochrane.org/CD005051/VASC_whole-grain-cereals-cardiovascular-disease
Key results
The diets were followed for at least 12 weeks, but most studies had some methodological limitations, numbers of participants were small, and the overall quality of the evidence was low. We found no studies reporting on the effect of whole grains on deaths from cardiovascular disease or cardiovascular events. All nine included studies reported the effects of whole grain diets on levels of cholesterol in the blood or blood pressure. We found no effects on blood cholesterol or blood pressure in favour of whole grain diets. Four studies were funded by independent national and government funding bodies, while the remaining studies reported funding or partial funding by organisations with commercial interests in cereals.
Conclusion
There is insufficient evidence from randomised controlled trials to date to recommend consumption of whole grain diets to reduce the risk of cardiovascular disease, or lower blood cholesterol, or blood pressure.
http://www.cochrane.org/CD005051/VASC_whole-grain-cereals-cardiovascular-disease
Key results
The diets were followed for at least 12 weeks, but most studies had some methodological limitations, numbers of participants were small, and the overall quality of the evidence was low. We found no studies reporting on the effect of whole grains on deaths from cardiovascular disease or cardiovascular events. All nine included studies reported the effects of whole grain diets on levels of cholesterol in the blood or blood pressure. We found no effects on blood cholesterol or blood pressure in favour of whole grain diets. Four studies were funded by independent national and government funding bodies, while the remaining studies reported funding or partial funding by organisations with commercial interests in cereals.
Conclusion
There is insufficient evidence from randomised controlled trials to date to recommend consumption of whole grain diets to reduce the risk of cardiovascular disease, or lower blood cholesterol, or blood pressure.