Is brown rice healthier than white rice?
Brown rice is more nutritious than white rice and produces a lower blood sugar spike, but only in its ordinary form, not the quick-cook version.
Milling rice removes the nutrient-rich bran layer. As a result, white rice contains much less fibre, vitamins, minerals and protective plant compounds than brown rice. This is a direct consequence of the production process and is not in dispute.
For blood sugar levels, brown rice has a clear advantage, but with one important note about how you cook it. When you cook regular brown rice in the usual way, keeping the bran layer intact, it produces a lower blood sugar spike than white rice. Instant (quick-cook) brown rice, however, loses that advantage: the processing damages the bran layer and the glycaemic index rises to nearly 88, comparable to white rice. Longer cooking times also reduce the difference. The benefit, then, lies in the ordinary, non-instant version that you cook yourself.
Brown rice contains fibre and active plant compounds that slow the digestion of starch and dampen a rapid rise in blood sugar. Studies in people and animal studies point to a lower risk of type 2 diabetes and excess weight with regular consumption, although this has not been demonstrated equally strongly across all studies.
For the heart and blood vessels, five large studies found that people who regularly ate wholegrains developed cardiovascular disease less often. Those studies looked at wholegrains in general, not specifically rice, and it has not been proven that the effect is directly caused by the grain type itself. The pattern was, however, consistent.
The evidence on nutrients (fibre, minerals, vitamins) is direct and well established: the milling process demonstrably removes the bran layer. For the blood sugar response, there are several comparative studies in people, including one where participants were randomly assigned to groups, that are consistent for the ordinary cooked version. For the lower risk of cardiovascular disease and diabetes, the findings come from long-running studies in which people were followed for years; cause and effect have not been firmly proven there. The researchers themselves stress that further studies are needed to confirm exactly how the effect works.
What is the Korean slow-ageing diet and does it work?
A Korean eating pattern built on wholegrains, legumes, vegetables, fruit and fish is linked in several studies to fewer depressive symptoms, better muscle strength and a slower rate of biological ageing. Combine it with sufficient physical activity and regular meals for the strongest effect.