Antioxidants Protect Against Lung Cancer

Antioxidants Protect Against Lung Cancer

A diet high in antioxidants may protect both smokers and nonsmokers from lung cancer. A study published in Frontiers in Oncologyfound that diets high in carotenoids and vitamin C reduce the risk in heavy smokers.

Some of the antioxidants, which included beta-carotene, alpha-carotene, beta-cryptoxanthin, and lycopene, were also associated with a lower lung cancer risk in female moderate smokers and nonsmokers.
"Our results suggest that vitamin C protects against lung cancer in women who have never smoked, something that to our knowledge has not been reported previously," said lead author Martine Shareck.

Data from a case-control study of lung cancer was used in the investigation, one of the few to examine the role of antioxidants by smoking intensity. It is the first study to consider both smoking duration and time since quitting, two key smoking history factors for lung cancer.

"For the three most common tumor subtypes, we observed that high intakes of beta-carotene, alpha-carotene, beta-cryptoxanthin, lycopene, and vitamin C were associated with a reduced risk of squamous cell carcinoma, while high intakes of beta-carotene and alpha-carotene lowered the risk of adenocarcinoma," explained professor and study co-author Marie-√Člise Parent of the INRS-Institut Armand-Frappier Research Centre.

"Both medium and high intakes of beta-cryptoxanthin and lycopene reduced the risk of small cell carcinoma," she said.

 Other nutritional substances have also been linked to a reduced risk of lung cancer. A European study of almost 400,000 adults found that adults with higher levels of B6 in their blood had half the risk of developing lung cancer as those with low B6 levels. "Reducing risk by 50 percent is quite impressive," study author Dr. Paul Brennan with the International Agency for Research on Cancer, told CNN. "It's more than one would expect by differences in diet."

Green tea is also a potent protector. A Taiwanese study found that drinking green tea daily reduced the risk of developing lung cancer by 66 percent, while smokers who didn’t drink green tea increased their risk 13-fold.

Source: Newsmax

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