Many people find a relationshp between RLS and diet. I have found that my RLS symptoms are greatly relieved by following a strict diet. There are several other people who have followed a diet and found relief. The big advantage is that there are no drugs and almost no expense.
I have had RLS for 55 years that I can remember. It was always a nuisance but it became really bad and life threatening about 20 years ago. I had a sympathetic doctor who helped with some drugs. I found that all the drugs I tried caused unacceptable side effects so I had to find something else. I finished up with a group at Monash University in Melbourne, Australia that had developed a diet for irritable bowel syndrome sufferers. This seemed like a good start so I tried it and my RLS symptoms improved immensely. I had been sleeping from about 5am to 7am but suddenly i was waking up during the night and walking around for 20 to 40 minutes and going back to sleep for another couple of hours. Other people have said they just slept all night. This is called the FODMAP diet and is mentioned in many posts on this and some other forums.
Very recently I spoke to another dietician who suggested a low chemical diet. The local experts on this diet are called Shepard Works and the original knowledge was developed in Sydney, Australia by the Royal Prince Alfred Hospital. They haven't promoted it widely because it hasnt been properly tested. I decided to try this about three weeks ago with some support from a dietician at Shepard Works. I should explain that the chemicals you are avoiding are not necessarily man-made but generated within the food. For example a green banana is good but a ripe banana has developed some chemical that you might not tolerate. Rare beef is fine but well done may not be. Its all very confusing but there is science in the design of the diet and in its application.
So two days of low-chem and nothing happened, two more days and I had vigorous RLS and zero sleep and then ..... 16 consecutive nights of uninterrupted sleep. (other than trips to the toilet of course) I then "challenged" my body with a half tin of pears and it failed so I lost some sleep the next three nights and now all is well again and I slept last three nights.
Both diets are described as exclusion diets. This means that you exclude as much as you can from your diet and see if you get better. If you are better then you try to re-introduce food again by taking a small amount one day and increasing the amount regularly. Some things will work - I am now able to drink cows milk with lactose still in it. Somethings dont work like my pears so you cross them off your future diet and look for the next victory. You hope that the eventual outcome will be that there are just a few foods or foodgroups that you can't eat and a banquet of foods that dont worry you so you can sleep fat and comfortable until morning every night.
I'm sure this wont work for everyone with RLS because nothing seems universal with this disease but you might be one of the lucky ones like me.
One very important thing is NO CHEATING Not even one thin wafer or just a spoonful of this or that. Coffee and tea are decaf. Coffee is apparently better than tea.
Its apparently normal for the low chem diet to work in a couple of weeks but the FODMAP diet took about 10 or 12 weeks to work for me.
Discuss this with your doctor to make sure your body can take the strain of this rigorous diet. If your doctor says a diet can't help RLS then find a better doctor. I paid a large amount of money to a neurosurgeon so he could tell me that RLS was not related to diet.
If you need any more information or links please feel free to communicate with me here and I will share anything I know.
Good Luck