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Diabetes Update

By December 1, 2022No Comments

Folic acid, vitamins C, D and E, benefit type 2 diabetes

  • Folic acid improves diabetes factors

Those with type 2 diabetes often have chronic elevated levels of the inflammatory factor homocysteine, which can increase insulin resistance. Folic acid is essential for regulating homocysteine levels.

In this study, 100 men and women with type 2 diabetes, aged 45 to 75, who had been taking the standard diabetes medication metformin at 1,500 mg per day for at least six months, added 5 mg of folic acid per day or a placebo.

After 12 weeks, while the placebo group had not changed, homocysteine levels had decreased 28.2 percent for those taking folic acid. In addition, fasting blood sugar levels decreased 8.7 percent, long-term average blood sugar fell 8.2 percent, serum insulin levels dropped 13.7 percent, and insulin resistance declined 21.7 percent. The inflammatory factor, high-sensitivity C-reactive protein also declined 5.7 percent.


  • Vitamins C, D and E preserve vision in diabetes

Poor nutrition and uncontrolled blood sugar in type 2 diabetes can damage the retina of the eye, a condition called diabetic retinopathy (DR). In this review of 35 studies covering 1,056 participants with DR and 920 without, doctors measured dietary levels of several vitamins and compared to the chances of developing DR.

Overall, levels of vitamin C in those with DR were 11.01 percent lower than those who did not have DR. Levels of vitamins D and E were also lower by 3.06 and 3.03 percent, respectively, in those with DR compared to those without.

Reference: American Journal of Ophthalmology; 2022, Vol. 238, 141-56

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