Another good way to reduce or even completely eliminate joint pain is to take into consideration your choice of carbohydrates. Worked for me.
The reason the recommendation in the UK is for "five a day" is that they knew if they made it any higher (as it should be) nobody would aspire to reach the target... they'd just give up. In Japan it's apparently 10 a day .
You sound like a carb/sugar addict trying to justify his addiction, 5 let alone 10 fruit and veg servings a day are absolutely not required for good health/longevity.
Balanced diet with all food groups covered and there is no need for the supplement! Although Creatine is natural it is not natural to pump your body full of it, I am in no way a purest just don't see the need, Look to professional sports men and women that bang down supplements and creatine like its proper food. Many of whom have suffered for there super strength and body tone! Whats the point in being super fit if its still going to kill you?
From all the stuff I have read, the only things that seem to have a noticeable effect are fish-oils (in much larger dosage than people think they need) and glucosamine.
even proffessional athletes don't need to take supplements if they're eating properly.
As was already mentioned, the only reason it's 5 a day recommended in the UK/USA is no one would eat 9 a day for men, 7 for women that it actually should be so they try to get people to eat 5 a day instead of 0 a day.
If you eat a well balanced diet encompassing lots of fish, 7/9 fruit or veg a day, whole grains, nuts, a reasonable amount of meat and carbs, keep horrible processed foods to a minimum then you'll never need a supplement in your life, bar serious medical conditions. Plus by the sounds of what people spend on creatine and Amino acids it's a hell of a lot cheaper and you'll be getting all the other things that are in food but not supplements.
That and a decent amount of exercise is easy to do even on a low budget and will have significant health benefits.
Science disagrees with you. Who am I going to trust, the NHS, or some faceless keyboard warrior on the Internet. Oh dear, you lose.