In a study reminiscent of the back-and-forth over whether beta carotene increases lung cancer risk in smokers or not, a study now suggests that curcumin too can increase the risk of lung cancer development when cancer-promoting factors like smoking, or a history of smoking, are present. As a possible mechanism for this effect, the researchers suggested that curcumin may promote cancer in smokers by accelerating the formation of free radicals in damaged lung tissue.
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