The Mudcat Café TM
Thread #171486   Message #4148758
Posted By: Jon Freeman
30-Jul-22 - 10:57 AM
Thread Name: Tips from Texas to the UK for beating the heat
Subject: RE: Tips from Texas to the UK for beating the heat
"The aspertame variant is the culprit. If the diet drink ever reaches 100 F the sweetener turns into formaldihyde."

Where does this come from? I've found that methanol is produced in the metabolism of aspartame and that formaldehyde is produced from methanol as it is processed through the body but nothing that matches what you suggest.

See Wikipedia for example.