Dietary Intervention for Preventing Colorectal Cancer: A Practical Guide for Physicians

Published on Friday, 29 December 2023

Abstract

Colorectal cancer (CRC) is a disease with high prevalence and mortality.

Estimated preventability for CRC is approximately 50%, indicating that altering modifiable factors, including diet and body weight, can reduce CRC risk.

There is strong evidence that dietary factors including whole grains, high-fiber, red and processed meat, and alcohol can affect the risk of CRC.

An alternative strategy for preventing CRC is use of a chemopreventive supplement that provides higher individual exposure to nutrients than what can be obtained from the diet.

These include calcium, vitamin D, folate, n-3 polyunsaturated fatty acids, and phytochemicals.

Several intervention trials have shown that these dietary chemopreventives have positive protective effects on development and progression CRC.

Research on chemoprevention with phytochemicals that possess anti-inflammatory and/or, anti-oxidative properties is still in the preclinical phase.

Intentional weight loss by bariatric surgery has not been effective in decreasing long-term CRC risk.

Physicians should perform dietary education for patients who are at high risk of cancer for changing their dietary habits and behaviour.

An increased understanding of the role of individual nutrients linked to the intestinal micro-environment and stages of carcinogenesis would facilitate the development of the best nutritional formulations for preventing CRC.

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About this publication.

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