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In this article

Is it all just fishful thinking?

We give the lowdown on the important VITAL trial, a large, long-term clinical study that examined vitamin D's and fish oil's effects on cancer and cardiovascular disease.

Study under review: Vitamin D Supplements and Prevention of Cancer and Cardiovascular Disease.

Introduction

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Who and what was studied?

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What were the findings?

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Hazard ratios 101

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What does the study really tell us?

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The big picture

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Frequently asked questions

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What should I know?

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