How important is it to steer clear of sugar? I’ve heard that sugar feeds cancer cells.

Sugar - Questions and Answers ABOUT FOODS AND CANCER PREVENTION AND SURVIVAL

QUESTION: How important is it to steer clear of sugar? I’ve heard that sugar feeds cancer cells.

ANSWER: Simple sugars (syrup, honey, white sugar, brown sugar, soda)
provide calories but no nutritional benefit when it comes to cancer prevention
and survival. It is easy to overdo it with simple sugars because
they are not filling. They can promote weight gain, which increases the
risk for certain cancer types. In addition, there’s some evidence that the
elevated insulin levels resulting from the consumption of simple sugars
may increase cancer risk and potentially impair survival. For these reasons,
it’s important to limit your intake of simple sugars and choose
more wholesome sweet foods, such as fruits, which have cancer-fighting
nutrients and fiber.31,32