Physicians swear to "primum non nocere" or "first do no harm". As there is no safety data for his recommendations in heart patients, Dr. Malhotra would be wise to review that credo. Meat, dairy products and artificial foods usually high in saturated fat remain the main felon in CAD with added sugars an obvious accomplice.
Your letter is not about your ex being a d*ck. If he were a d*ck, you would have stopped thinking about him by now. But you are thinking about him. Almost a year later, and you're reaching out to me, too. You said you shouldn't be thinking about him though. Has someone told you that? Often our friends do.