What happens to your brain when you give up sugar – BBC Future https://www.bbc.com/future/article/20210818-what-happens-when-you-quit-sugar?at_campaign=64&at_custom1=%5Bpost+type%5D&at_custom4=A347C2D2-0780-11EC-A464-6AEB923C408C&at_custom2=facebook_page&at_custom3=BBC+News&at_medium=custom7