Hi All
Apologies if this has already been discussed.
Many people swear that sugar is a cancer accelerant but my Oncologist says that the link is totally unproven.
Does anyone have any updated evidence or personal experience with this subject?
It seems too important a subject to ignore!
Thank you as always
Russell
Hi Russell. I agree with your oncologist. There are plenty of theories on the internet but just how many of these are down to informed peer reviewed research is likely what drives your oncologist’s opinion.
Dani
Base of tongue cancer. T2N0M0 6 weeks Radiotherapy finished January 2019
Hi Russell.I would listen to your Oncologist as they are usually up on the latest info. I know that my husband who is a diabetic has to be careful not to have his sugar levels go too high as this can cause lots of long term effects. Recently he had a total hip replacement and initially had surgery delayed as his sugar levels were too high and they said that this would almost certainly cause infection and a failure of the hip surgery. The good news is that he got his sugar levels under control and had a very successful op. I think the point I am trying to make is that in some cases high sugar levels are very damaging but it would seem not under normal circumstances where our pancreas is working fine. Sugar can also be damaging to our oral health, cause weight gain and multiple other issues if not consumed in moderation. So it is best to control sugar intake for our general health.
Lyn
Sophie66
I agree entirely Michael. I did the same after my radiotherapy and weight loss and had the same advice. I meant under normal circumstances about the sugar not when you are trying hard to gain weight. Now I have got the weight back on and am feeling well I am trying to eat a healthy diet so I am more aware of the sugar in my food. You do what you need to do when recovering from treatment.
Lyn
Sophie66
I think this comes from the fact that, for example, a PET scan uses a radio isotope in a "sugar" solution as it is know that the tumours take up the sugars more readily than other parts of the body and thus show up more so on the scan. That said, other infections and damage to the body can also behave the same way.
In general life your oncologist is totally right and I do not believe sugar is a serious issue when involved with cancers.
tumours take up the sugars more readily than other parts of the body and thus show up more so on the scan.
Except the liver and the brain. These use masses of energy.
The liver SUV is used as a baseline for tumour activity.
Dani
Base of tongue cancer. T2N0M0 6 weeks Radiotherapy finished January 2019
After weight loss due to treatment side effects I was advised by oncology teams to get calories into my system by any reasonable means possible...cream buns, cakes, biscuits etc.,...oncology would not put me at risk.
Spot on.
Look at the make up of Fortisips and you’re taking those while you still have cancer
Dani
Base of tongue cancer. T2N0M0 6 weeks Radiotherapy finished January 2019
helps to make them taste better, if that is possible
Dani
Base of tongue cancer. T2N0M0 6 weeks Radiotherapy finished January 2019
Whatever cancer throws your way, we’re right there with you.
We’re here to provide physical, financial and emotional support.
© Macmillan Cancer Support 2026 © Macmillan Cancer Support, registered charity in England and Wales (261017), Scotland (SC039907) and the Isle of Man (604). Also operating in Northern Ireland. A company limited by guarantee, registered in England and Wales company number 2400969. Isle of Man company number 4694F. Registered office: 3rd Floor, Bronze Building, The Forge, 105 Sumner Street, London, SE1 9HZ. VAT no: 668265007