It might be hard to imagine, but you may be able to significantly improve your health by eating a few less chips and drinking less than a cola per day—even if you’ve been eating poorly for decades and living a largely sedentary life. New research from the American Heart Association finds that obese seniors who cut just 250 calories per day and exercise moderately can undo decades of damage to vein health. This may also contribute to weight loss. Cutting 250 calories is virtually nothing. To put things in perspective, a single can of cola has about 140 calories. A serving of potato chips (and who has just a serving) is about 150 calories. The researchers found that a combination of moderate exercise and calorie reduction worked better to improve vascular health and promote weight loss than aggressive calorie reduction and moderate exercise or exercise alone. Reducing calories by 250 per …