Just stop eating both. Both have their issues with cancer.
Stop for two weeks straight including tomatoes, fruits , carbs and the addiction, because that's what it is for the human body, will get over it.
From then on the cravings or general need for sugar will drastically lessen all while being able to enjoy something sugary from time to time.

If not wanting to sacrifice sweetness right now, at least keep this in the back of the head if diagnosed with cancer.
If not wanting to believe cutting out all sugar drastically helps kill the cancer, consider chemo will be much easier on the digestive system in any case. Extreme nausea often causes people wanting to quit treatment...

They've gone so far as to propose diabetics medication in addition to chemo, while the easiest and safest way is to simply cut all sugar and everything that impacts insulin. Artificial sweetners will impact insuline, but that's not the only problem. But that doesn't make anybody rich...

Eta: You prefer to die of cancer then to all downvoters? .You have a powerful opportunity in hand, which is well known and old science, but obscured, because of lack of profit.

Suite yourselves.

This is meant for those who don't have any choice left when getting a cancer diagnosis, and are willing to make a change or two to give themselves the best chance, especially when they receive a non-treatable diagnosis.
I couldn't care less how much sugar or carbs anyone consumes otherwise.