Both groups caught exactly the same number of colds. That is the bit that stopped me.
September again. The school bags are back on the pegs, the mornings have a nip to them, and right on cue the first sniffles are doing the rounds at the school gate.
For years I just took it as read. Autumn arrives, half the house gets run down, you soldier through till spring and hope for the best.
Then I sat down and actually read the research on Juice Plus sick days, and it changed the way I look at the whole season. A proper trial, in a proper journal, with hundreds of people in it. That line about the colds is where it gets interesting.
What the Juice Plus sick days study actually found
Back in 2011 a group of German researchers ran the kind of study you can genuinely trust. Randomised, double-blind, placebo-controlled. That is the gold standard, the sort of design used to test medicines. Half the people got the real thing, half got a dummy capsule, and nobody, not even the researchers, knew who was on which until the end.
They followed 529 hospital staff for eight months. Doctors, nurses, the people most in the firing line for every bug going round a busy ward. One group took a daily fruit and veg concentrate. The other took a placebo.
The result, published in a 2011 study in the British Journal of Nutrition, was quietly brilliant. The group on the concentrate had about 20% fewer days with moderate to severe cold symptoms. In plain numbers, 7.6 rough days against 9.5 on the placebo.
And I want to be straight with you here, because honesty matters more than hype. Like I said at the top, both groups still caught colds, the same number of them. The concentrate did not make anyone bulletproof. What shifted was how bad the colds got. The really wretched days, the ones where you cannot think straight and you would give anything to feel human again, there were fewer of those. The colds were milder. You can read a plain-English write-up of the trial over on ScienceDaily if you want to see it for yourself.
Why milder matters more than it sounds
Think about your own worst cold last winter. What floored you was the two or three days in the middle, when your head felt like wet cement and you had to cancel everything. The sniffle at the start was never the problem.
Now imagine taking the edge off those days. Fewer of them. A cold that stays a nuisance instead of turning into a week written off. Across a family, across a whole autumn term, that adds up to a lot of ordinary days you get to keep.
I think of the year our two brought home every bug the school had to offer. October was a write-off. Cancelled plans, broken sleep, one of us always under the weather. Every bug seemed to hit hard and flatten us for days. That is exactly the bit the study is talking about, and it is the bit worth doing something about.
It is no magic shield. Nobody is promising you a winter without a single sniffle. What the science points to is a body that copes a bit better when the bug does land. And that, to me, is worth having.
The simple reason it works
Your immune system does not run on thin air. It runs on the steady drip of vitamins, minerals and plant compounds you get from eating a proper spread of fruit, veg and berries. The more colours on the plate, the better.
The concentrate in that study is made from more than 30 different fruits, vegetables and berries. Cherry, apple, broccoli, orange, spinach, beetroot, the lot. It is a way of topping up the plants most of us keep meaning to eat and somehow never quite manage, especially once life gets busy and the kids are back at school.
And that gap tends to open at the worst possible time. Just as cold season starts, the diet slips. Toast on the run, whatever is in the lunchbox, dinner at half seven if you are lucky. If you want to go deeper on this, I have written before about how few of us actually hit our fruit and veg every day, and about whether the nutrients in a concentrate really get absorbed. Worth a read if you like to know the why before the what.
What I do, and why
I am not a scientist. I am a fella who reads the studies, does the maths on his own sick days, and makes a call.
Fourteen years now, every single morning, I take a fruit and veg concentrate before anything else. It is the first thing I do, alongside a big glass of water, before the day gets its hands on me. Not because I think it makes me invincible. Because it is a small, cheap, sensible way to back up a diet that is never perfect, and the research gives me a good reason to bother.
If you want to support your immune system the natural way this autumn, start where the evidence points. Eat the rainbow. Get your plants in, as many colours as you can manage. And if a daily concentrate makes that easier on the mad mornings, it is a two-second habit that costs less than your coffee.
September is going to come round every year whether we like it or not. This is the one I am walking into with my eyes open.
This post is general information about nutrition and wellbeing, not medical advice. A fruit and veg concentrate supports a healthy diet, it does not treat, prevent or cure any illness. If you are unwell or have a health condition, talk to your GP.
