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Science Quickly

Antioxidant Use Still Small Mixed Bag

Feb 1, 2016
Walter Willett, Chair of the Harvard T. H. Chan School of Public Health's nutrition department, discusses the controversy surrounding antioxidant supplements. He highlights conflicting evidence from randomized trials and emphasizes that while antioxidants may have some benefits, they are not a guaranteed solution to diseases.
03:12

Episode guests

Podcast summary created with Snipd AI

Quick takeaways

  • Randomized trials have not shown significant benefits of antioxidants in the diet.
  • Beta-carotene supplements may improve cognitive function, but overall dietary and lifestyle changes are more important for reducing cancer risk.

Deep dives

Uncertainty around the benefits of antioxidants

Despite several decades of research, there is still no clear answer regarding the benefits of antioxidants in the diet. According to Walter Willett, a nutrition expert at Harvard, randomized trials have not shown significant benefits. In fact, the use of beta-carotene, one of the antioxidants, was associated with an unexpected increase in lung cancer among heavy smokers and drinkers. While there may be some benefits to antioxidants, they are not a magic solution for cancer or other diseases.

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