@sharifa12:
Sugar may not directly cause cancer but high levels of circulating glucose, ie, more than you need given your activity level, causes insulin to spike and if this is the frequent you could end up developing insulin resistance. In this state you are at much higher risk of becoming diabetic, the risk of developing other diseases including cancer is heightened. So, the short answer is to avoid sugar and empty carb calories, when possible.
While there may or may not be a direct relationship between cancer and sugar there is a strong correlation between metabolic disease and all kinds of diseases incl cancer. Read “Outlive” by dr Peter Attia for a fuller or more complete discussion of this topic. Reducing sugar may be a challenge so try working on it gradually by cutting out or scaling back one bad habit that you may have. If you cook and bake you can easily scale back the amount of sugar in any recipe and find that it is still sweet enough. Your taste buds will adapt over time.
No dietary strategy can guarantee being free of cancer but you can definitely cut your risk by making better dietary choices and don’t forget exercise. This is really important!