Scientists say they can find no convincing evidence to show that taking vitamin D supplements will fend off a cold. The 161 people who took daily vitamin D for 18 months caught as many colds as the 161 who took fake pills.
The study was reported in the Journal of the American Medical Association.
But a leading UK cold expert said vitamin D was useful. Prof Ronald Eccles, of the Common Cold Center at Cardiff University, said it can give the immune system a much-needed boost during winter when vitamin D reserves may be low.
He said echinacea supplements may also help ward off coughs and colds, but added, “Supplements do not work for everybody because people’s immune systems are different. It’s not a case of one size fits all.”
1. convincing adj.
具說服力的 (ju4 shui4 fu2 li4 de5)
例: I didn’t find the ending of the film very convincing.
2. fend off v. phr.
對付 (dui4 fu4))
例: Somehow she managed to fend off the awkward questions.
3. one size fits all
idiom 一體適用 (yi4 ti3 shi4 yong4)
例: He advocates a one-size-fits-all approach to education.