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+ 5/20 Previous Next © Thinkstock 5. Artificial sweeteners It's true that artificial sweeteners contain fewer calories than real sugar, but don't forget—they're artificial aka not made from natural ingredients. Not only that, they can have a negative impact on our digestive system and metabolism.