Although CLL is classified as a cancer, Dr Li's work on angiogenesis is pertinent only to solid tumours. Blood cancers and solid tumour cancers have different mechanisms of action.
But as far as solid tumours are concerned, Dr Li's work is probably on solid ground. Food as medicine is a well-accepted concept in some circles, but difficult to prove. Trials without a financial end-game are notoriously difficult to get off the ground.
SNIP Nutrients or vitamins are not simply good or bad, cancer-causing or cancer-fighting. If a book or blog recommends a single “cancer diet”—or even a supplement that promises to fight cancer—beware. It could end up making things worse. Especially if there is a person on the cover in a white coat with arms folded, and with teeth that look like they have never been used.
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For now, unless an oncologist has advised a specific diet tailored to your specific tumor, the most common recommendation is to eat a generally healthy diet. None of this challenges the principle that staying well nourished is part of a healthy approach to any disease; and there is no evidence that overall starvation is good or even safe. But focusing on specific patterns of eating will likely be part of many cancer-treatment guidelines in coming years.
Food is medicine—or metabolic therapy. And no metabolic therapy is good or bad for everyone in every condition.
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James Hamblin, M.D., is a former staff writer at The Atlantic. He is also a lecturer at Yale School of Public Health, a co-host of Social Distance, and the author of Clean: The New Science of Skin.
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