Recently an Ayurvedic practitioner advised drinking warm water with lemon juice can help diabetes. I take this very day for a long time not because I am diabetic but it helps constipation. Since 2007 when I was first given medication my HbA1c has never gone up beyond 6.3. Once it was 6.2 and 6.1 but normally it is below 5.9 tested quarterly. There is no harm in trying this as there no bad side effects at all as it may be of some help. I am aged nearly 80.