Fiber Supplementation in Heart Failure With Preserved Ejection Fraction (HFpEF)

"Participants will consume 10 grams (1/2 a packet) of Bob's Red Mill Potato Starch twice a day for the first 7 days and then increase to 20 grams (full packet) of potato starch for approximately 3 weeks. Potato starch can be mixed into cold food or beverage for consumption.~In addition, participants will have evaluations and provide blood and stool samples during the study."