20 Foods that Speed Up Aging ByStephanie Holmes, 06/14/2024 Gourmandize shares Share on Facebook Share on Twitter Pin it Share on WhatsApp Share on Google+ 12/20 Previous Next © Thinkstock 12. Flour Plain white flour has a high glycemic index, which causes inflammation throughout the body. Inflammation is directly linked to aging, so opt for whole wheat flours or other non-refined flours as much as possible.