Australians risk increasing their chances of developing diabetes, cardiovascular disease and colon cancer if they cut quality carbohydrates high in cereal fibre from their diets, experts say.

A group of leading international and Australian experts say the evidence on the health benefits of eating whole grains is "unequivocal" and those who avoid them are increasing their risk of disease.

Experts are warning against the trend of Australians cutting quality carbohydrates.

In a bid to increase the consumption of whole grains, the International Carbohydrate Quality Consortium (ICQC) - a group of about 30 nutrition academics, epidemiologists and scientists - has released a consensus report on their health benefits.

The report follows two days of discussions in Italy in September between ICQC members, including US physician Professor Walter Willett at Harvard University's School of Public Health.