Diabetes, High Blood Sugar: Think of Vitamin C and Magnesium

Diabetes, High Blood Sugar: Think of Vitamin C and Magnesium

Vitamin C and magnesium help control blood sugar levels and prevent complications.
Diabetes High Blood Sugar Think of Vitamin C and Magnesium

6 people die from complications of diabetes every minute. To better control your blood sugar, you should think about vitamin C and magnesium in addition to diet and exercise.

Vitamin C

In a new study, researchers studied the effect of vitamin C supplementation on glycemic control (measurement of glucose concentration and glycated hemoglobin Hb1Ac) and regulation of insulin. For this, they analyzed the results of 22 studies, including a total of 937 participants (diabetics or not). Doses of vitamin C ranged from 72 to 6000 mg per day.

The results show that supplementation with vitamin C reduces blood glucose in diabetic patients. The beneficial effect of vitamin C on blood glucose is even more important when supplementation lasts more than 30 days. In addition, the impact of vitamin C on blood glucose control varies with a number of factors such as age, body mass index, duration of supplementation, and initial concentration of glucose and vitamin C.

Vitamin C supplementation also decreases plasma fasting insulin levels, especially in older and overweight or obese individuals.

High blood glucose results in the production of free radicals which, when they are in excess (oxidative stress), can no longer be neutralized by the antioxidants present in the body. The complications of diabetes are partly explained by oxidative stress, itself causing inflammation and damage to the endothelium.Thanks to its antioxidant properties, vitamin C can help fight against the damage caused by oxidative stress.

Studies show that a higher antioxidant capacity is associated with decreased insulin resistance and better blood sugar control. In addition, people with diabetes have lower blood concentrations than those in healthy individuals. And having high blood levels of vitamin C decreases the risk of diabetes.


People with diabetes who lack magnesium are more likely to have complications associated with the disease. This is suggested by a study published in the journal Clinical Nutrition that a low level of magnesium is associated with a significant increase in blood glucose.

The authors followed 51 people with diabetes and showed that more than 75% of the participants lack magnesium. The more the rate of magnesium is low, the more the blood glucose at fasting and 2 hours after the meal is raised. It is possible that the lack of magnesium disrupts the action of insulin by causing insulin receptors to malfunction: this would cause an accumulation of glucose in the blood. According to the figures, at least one diabetic out of two lacks magnesium.

In the case of magnesium deficiency, specialists advise supplements of 300 to 600 mg/d, then, once restored magnesium status, 100 to 300 mg per day plus a diet rich in magnesium.


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