New age health blogging sites and you’ll find posts on how drinking hot lemon water or knocking back a shot of wheatgrass juice or the current green goo du jour will “boost your immune system” and make you less likely to get ill. These are tempting prospects at this time of year, but ones that are foiled by an inconvenient truth: they don’t work. The idea that any dietary supplement can boost your immunity makes very little scientific sense. And because of the way your immune system works, even if they did what they say they did, you definitely wouldn’t want them to.There are only two ways the human body can deal with invading pathogens and infections – and neither involves vitamins or ‘superfoods’
Source: Why bingeing on health foods won’t boost your immune system | Science | The Guardian