Scientific evidence for a healthy diet and prevention of diabetes

Simple things in life can be the most difficult; For instance, Regular Exercise and a balanced Diet for a healthy life.

What constitutes a healthy diet is common knowledge. For example eating Whole grains, Fresh Fruit and Vegetables )

But what is accepted as common knowledge is not always backed up by robust scientific evidence .

So it is good to see two scientific papers in a recent issue of British Medical Journal with one paper exploring the role of fruit and vegetable consumption on type 2 diabetes and another paper exploring the role of whole grain foods on risk of type 2 diabetes.

1. One study found that Vitamin C and carotenoids have a protective effect against diabetes ( eg diet rich in citrus fruits, tomatoes , root vegetables such as carrots )

A word of caution to those rushing to buy vitamin supplements from the authors : “fruit and vegetable intake, rather than vitamin supplements, is potentially beneficial for the prevention of type 2 diabetes”.

2. Another study found that “whole grain foods, including whole grain breakfast cereal, oatmeal, dark bread, brown rice, added bran, and wheat germ, significantly reduced the risk of developing diabetes.


1. Association of plasma biomarkers of fruit and vegetable intake with incident type 2 diabetes: EPIC-InterAct case-cohort study in eight European countries.

BMJ 2020; 370 doi: (Published 08 July 2020)

2. Intake of whole grain foods and risk of type 2 diabetes: results from three prospective cohort studies .

BMJ 2020; 370 doi: (Published 08 July 2020)

Disclaimer: Please note- This blog is NOT medical advice. This blog is purely for information only and do check the the sources where cited. Please consult your own doctor to discuss concerns and options relevant to you.

The views expressed in this blog represent the author’s views held at the time of publication and is likely to change overtime, particularly when new evidence comes to light. The blog is not necessarily endorsed by any organisation the author is associated with and views are not substitute for professional advice.