I think this along with what pfannkuchen suggested both may contribute to this unexpected result. In addition, instant coffee tends to be made from much lower q

I think this along with what pfannkuchen suggested both may contribute to this unexpected result. In addition, instant coffee tends to be made from much lower quality beans; lower quality beans tend to be used in darker roasts and seem like they would have higher acrylamide content. In addition, the additional heating step the instant coffee goes through might also further elevate acrylamide. https://www.cancer.gov/about-cancer/causes-prevention/risk/diet/acrylamide-fact-sheet https://www.cancer.gov/about-cancer/causes-prevention/risk/d... I think it would be useful to test and compare amount of acrylamide in instant coffee versus the typical medium roast coffees, in addition to seeing whether this substance affects telomeres.