Health · Fitness & Nutrition · 2 hrs ago
Three vitamins support health but do not control blood sugar directly
A Mumbai doctor says vitamins D, B12 and B1 support health but do not directly control blood sugar.
They play different roles in metabolism, nerve function and other bodily processes.
Low vitamin D has been linked with insulin resistance, but a deficiency does not mean someone will develop diabetes, and supplements have not been shown here to prevent it.
People taking metformin may be more likely to have low B12, particularly after long-term use.
Deficiencies in these vitamins can cause problems such as fatigue, weakness or nerve symptoms.
Testing can help identify a deficiency, and people with diabetes should discuss tests and supplements with a doctor.
Too much vitamin D can raise blood calcium to dangerous levels, so supplements should not be started without medical advice.
Vitamins D, B12 and B1 support metabolic and nerve health but do not directly regulate blood sugar or replace diabetes medication.
Dr Rituja Ugalmugle, a consultant in internal medicine at Wockhardt Hospitals, Mumbai Central, explained the vitamins’ roles.
People with diabetes who take metformin may be particularly susceptible to low vitamin B12 levels, especially with long-term use.
The article recommends consulting a doctor and getting tested before starting vitamin supplements.
Excessive vitamin D supplementation can raise blood calcium to potentially dangerous levels.
- Who
- Dr Rituja Ugalmugle, a consultant in internal medicine, discussed the vitamins. The advice is relevant to people with diabetes or prediabetes.
- What
- The article says vitamins D, B12 and B1 support health but do not directly control blood sugar.
- When
- Published on 2026-11-04.
- Where
- Wockhardt Hospitals, Mumbai Central, is Dr Ugalmugle’s workplace.
- Why
- The article explains the vitamins’ roles in metabolic and nerve health and cautions against treating them as blood sugar medication.
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- Vitamins discussed
- D, B12 and B1
- Expert
- Dr Rituja Ugalmugle
- Hospital
- Wockhardt Hospitals, Mumbai Central
- Metformin-related concern
- Long-term use may make people more susceptible to low vitamin B12 levels
- Vitamin D risk
- Excessive supplementation can raise blood calcium to potentially dangerous levels
What people are saying
Vitamin D is important for metabolic health, but a deficiency does not automatically mean that a person will develop diabetes.
Vitamin B12 is important for nerve health, particularly in people with diabetes who are taking metformin.
Vitamin B1 plays a role in carbohydrate metabolism and nerve function, but it should not be viewed as a direct treatment for high blood sugar.