Quality of diet may matter more than if it's low-carb or low-fat.

The article presents three recent research findings in health and medical technology. First, a long-term study of over 130,000 participants found that higher intake of caffeinated coffee and tea was associated with an 18% lower risk of dementia and better cognitive function, while decaffeinated coffee showed no such benefits, suggesting caffeine's potential neuroprotective role. Second, analysis of nearly 200,000 individuals indicated that the quality of low-carbohydrate and low-fat diets—emphasizing plant-based foods and healthy fats—was more important than macronutrient quantity in reducing coronary heart disease risk. Third, Kandu, Inc. reported that its FDA-cleared IpsiHand System, a brain-computer interface device for at-home stroke rehabilitation, significantly improved upper limb motor function in chronic stroke survivors compared to conventional home exercise, demonstrating meaningful recovery even years post-stroke.