It all depends on how you store this artichoke and green bean risotto. You can get food poisoning from eating reheated rice, but it’s not the reheating that is the problem, it’s how the rice (or pasta in this case) was kept prior to refrigerating. If you leave cooked rice out at room temperature for too long it can quickly grow bacteria that causes food poisoning. However, if you allow the rice to cool within an hour and immediately store the leftovers in the refrigerator, it is safe to reheat and eat the next day.