Joel Fuhrman, M.D.
No matter how many different dietary theories there are out there, pretty much everyone agrees that vegetables are “good for you”. But how good they truly are has been debated – there are plenty of observational studies linking vegetable consumption to favorable health outcomes, but other studies have made headlines by casting doubt on how powerful plant foods are for preventing disease. The data from these observational studies is often flawed simply because the majority of people in the Western world don’t eat enough vegetables to have a measurable impact on their risk of chronic disease – only about 25% of Americans eat the recommended three one-cup servings of vegetables each day.[1] Also, total vegetable consumption isn’t necessarily an accurate indicator of the healthfulness of one’s diet, since some vegetables are far more nutrient-dense than others. Of course, long-term controlled trials of consumption of a high-nutrient vegetable-based (nutritarian) diet have not yet been published (with the Nutritional Research Project (https://www.nutritionalresearch.org/), I aim to fill this gap in the medical literature). Some long-term observational studies, however, do provide clear, high-quality data demonstrating that vegetable consumption is an important factor in chronic disease prevention – a recent study on serum α-carotene levels and risk of death provides such data. Read more...
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