A controversial dietary supplement made from concentrated fruit and vegetable juices can shorten the duration of a cold, according to a study published in the British journal of nutrition.
The study involved 500 subjects over a period of eight months. For half of the subjects' daily intake of american-made JuicePlus + supplement, the other half of the subjects intake as comparison, contrast agent on the randomized double-blind trial research (double-blind trials is to point to in the process of test, test and quizzee all don't know were belong to categories, analysis is based on the analysis of data, usually also don't know what is the analysis of the data belong to which group). When the number of people in both groups had the same number of colds, those taking fruit and vegetable supplements had milder symptoms, while the proportion of people with moderate or severe colds also dropped by 20 percent.
The researchers said the results were encouraging because it showed that certain dietary supplements may reduce cold symptoms. The reason for dietary supplements to relieve cold symptoms is not clear, and the long-term suitability of the product needs further study.