1. Statins are for cholesterol and since there is some question as to whether they help (unless you've already had a CVD event), your neighbor should do some research as to what to eat although the diet recommended by the doctor who prescribed statins is unlikely to have good advice.
2. It is diet AND tablets for most people but for many it can be diet instead of tablets…
3. Low carbohydrate diets are by far the most successful for diabetes (and maybe for CVD as well) which makes sense since you want to reduce blood sugar. The resistance of the medical profession to recommending them is incomprehensible until you think of all the bizarre things in the history of medicine. However…
4. If you are taking medication for diabetes, you should not start a low carb diet without talking to the physician. It is usual to reduce your medication in advance of the diet.
Richard David Feinman
Professor of Cell Biology
SUNY Downstate Medical Center.