Researchers found that for about every serving (16 grammes) of whole grains there was a seven per cent decreased risk in total deaths, nine per cent decline in cardiovascular disease-related deaths; and five per cent decline in cancer-related deaths.
The more whole grains consumed, the lower was the death rate. According to researchers, when three servings (48 grammes) were consumed daily the rates declined 20 per cent for total deaths; 25 per cent for cardiovascular deaths; and 14 per cent for cancer-related deaths.
Whole grains, such as whole wheat, oats and brown rice, contain dietary fibre, which may help improve blood cholesterol levels, and lower the risk of heart disease, stroke, obesity and type 2 diabetes, researchers said.
Dietary fibre can also make you feel full longer, so you may eat fewer calories.
Whole grains provide many nutrients, such as fibre, B vitamins, and minerals, which are removed during the refining process, researchers said.
The findings were published in the journal Circulation.