High cooking temperatures used in frying the potatoes and preparing chips seem to destroy most of the healthy substances in a potato, leaving mainly starch, fat and minerals. Microwaved potato seems to be the best way to preserve nutrients.
ScienceDaily (Aug. 31, 2011) — The potato’s stereotype as a fattening food for health-conscious folks to avoid is getting another revision as scientists report that just a couple servings of spuds a day reduces blood pressure almost as much as oatmeal without causing weight gain. Scientists reported on the research, done on a group of overweight people with high blood pressure, at the 242nd National Meeting & Exposition of the American Chemical Society (ACS), being held in Denver the week of August 29.
- Potatoes reduce blood pressure in people with obesity and high blood pressure (medicalxpress.com)