Science - over the last 15 years or so - is really coming around to the connection between cancer and sugar. It's interesting that this was proposed almost a century ago by Warburg, was de-emphasized by science after WW2, and is now re-emerging.

The medical community at large seems reluctant to look closely at diet as a prevention or treatment for disease. It's always about the drugs. There are exceptions. But, they'd still rather pump you up with Metformin instead of tell you to cut carbs.