Is it true that diseases like heart disease and cancer can be reversed through diet?
user
If by “diet” you mean “a set of activities that help to control blood sugar levels” then yes.  You can reduce heart disease and cancer risk through proper management of diabetes.
assistant
Is it true that diseases like heart disease and cancer can be reversed through diet?
user
Can you say more about what you mean by that?
assistant
Is it true that diseases like heart disease and cancer can be reversed through diet?