Monday, March 9, 2015
Adding Milk to Tea Destroys its Antioxidants
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| en.wikipedia.org |
In many parts of the world, the custom is to serve tea with milk. But lately researchers have been surprised to find that adding milk may strip tea of some of its beneficial effects.
In a study published in The European Heart Journal, researchers had 16 healthy adults drink cups of freshly brewed black tea, black tea mixed with a small amount of skim milk, or boiled water. Then the scientists measured the effects on vascular function.
Compared with water, black tea “significantly improved” arterial function, the researchers found, “whereas addition of milk completely blunted the effects of tea.”
The scientists repeated similar tests in mice and found the same results, which they speculated may be a result of proteins in milk binding to and neutralizing antioxidants. “Milk,” the researchers wrote, “counteracts the favorable health effects of tea on vascular function.”
A study published this year looked at whether the effect was limited to dairy products. It was not: Proteins in soy milk had the same effect as regular milk on antioxidants in tea.
Source : New York Times
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