It was discovered that have microvascular disease when I had a stroke 2 1/2 years ago. I had diabetes (A1C 13), high cholesterol (275) and high blood pressure (175/90) for 15 years before that. After the stroke I changed my lifestyle and diet, and now my A1C is 5.6, my cholesterol is 146 and my bp is 102/60, all without medication. But I continue to have mini-strokes frequently (every 2 weeks-3 months) and the MRI always shows increased T2 Flair Hyperintensities (but no large vessel stenosis or large stroke lesions). Since I improved everything (and lost 45 pounds by becoming a vegan) why am I still having the ministrokes?