Vitamin D May Slow Diabetes Risk in Prediabetes
A meta‑analysis of about 4,500 people with prediabetes across 10 trials found vitamin D supplementation modestly increased the share who reached normal blood sugar (18.5% vs 14% on placebo), suggesting potential improvements in glycemic control and insulin resistance, though effects vary and aren’t guaranteed. Experts say vitamin D should complement—not replace—lifestyle changes (low‑glycemic diet, weight management, regular exercise) and medical guidance; typical study doses were around 4,000 IU daily, with precautions against toxicity and the need to check vitamin D levels with a clinician.
