Diabetes CareEvery Ganeshotsav and Navratri, patients ask us the same question, usually a day or two before they have already started: can I keep upvas with diabetes? For most people the honest answer is yes, with planning. For a smaller group the honest answer is no, or not this way. The difference is worth a ten-minute conversation with your doctor before the festival, not after something goes wrong.
This guide covers the two risks that actually matter, why upvas food often pushes sugar up rather than down, and the specific situations where we advise patients not to fast at all.
The first is low blood sugar, or hypoglycaemia. If you take insulin or certain tablets, particularly the sulfonylurea group, going many hours without food can drop your sugar dangerously. This is the risk people expect.
The second surprises almost everyone: upvas food can send sugar sharply up. Sabudana khichdi, batata bhaji, rajgira ladoo and fried faral are largely refined carbohydrate and fat. A single plate of sabudana can raise blood glucose more than the regular rice-and-dal meal it replaced. So a patient can finish a fasting day with both a hypo in the afternoon and a high reading at night.
| Upvas food | Effect on blood sugar | Practical note |
|---|---|---|
| Sabudana khichdi | Sharp rise | Almost pure starch. Keep the portion small and add peanuts and curd |
| Batata (potato) bhaji, chips | Sharp rise | Boiled is better than fried; watch the quantity |
| Rajgira or varai (samo) | Moderate rise | Better than sabudana, still a carbohydrate. Portion matters |
| Peanuts, groundnut chutney | Little rise | Protein and fat, helps slow the meal down |
| Curd, milk, paneer | Little rise | Good anchor for an upvas plate |
| Fruit | Moderate rise | Whole fruit over juice, one portion at a time |
| Fried faral, sweets | Sharp rise | The commonest reason a festival reading is high |
This is the single most important line in this article. Never skip, halve or shift your diabetes medicines on your own to accommodate a fast. Some medicines are safe to continue unchanged, some need the timing moved, and some need the dose adjusted. Which of those applies depends on what you take, and only your doctor can tell you.
Come with your actual medicine list and your recent sugar readings, and say clearly how many days you plan to fast and whether you will eat once or twice. A five-minute review is usually all it takes to make the fast safe.
There are situations where the risk is genuinely too high, and where we would ask you to mark the festival in another way. These include:
Choosing not to fast for a medical reason is a legitimate decision, and one many families make quietly every year. Your health is the point of the discussion, and the choice is yours to make with your doctor and your family.
Learn these signs, and make sure someone at home knows them too: shakiness, sweating, a pounding heart, sudden hunger, confusion, irritability, blurred vision or feeling faint.
If you get them, break the fast at once and take about 15 grams of fast-acting sugar: three or four teaspoons of sugar or glucose in water, or half a glass of regular juice. Wait fifteen minutes and re-check. Repeat once if you are still low, then eat something more substantial. Do not try to push through a hypo, and do not wait to see if it passes.
If someone becomes drowsy, confused, unable to swallow or unconscious, do not give anything by mouth. Call 108 immediately.
If you have diabetes and plan to keep upvas this Ganeshotsav or Navratri, book a short review before the first day. Our diabetologist and dietitians at Prudent International Health Clinic in Viman Nagar can check your medicines against your fasting plan and build an upvas plate that will not spike you. We are open all seven days, and walk-ins are welcome.
This article is general health information, not personal medical advice. For guidance specific to you, please consult a qualified doctor, our team is available all 7 days at +91 70287 22200.
About the author

Dr. Rajiv Kumar
MBBS, MD (Community Medicine) · Diabetologist, 24+ years' experience
General physician with 24 years across family and community medicine, also consults for diabetes care and sexual health, making him many families' first call for almost everything.
Consulting at Prudent International Health Clinic, Viman Nagar, Pune
Take the First Step
Consulting at Prudent International Health Clinic, Viman Nagar, Pune.