Good to chew

2019-03-07 10:14:15

A chewing stick that Namibians use to clean their teeth has been shown to contain chemicals that kill the bacteria responsible for cavities and gum disease. Researchers in the US and South Africa identified six antibacterial compounds in muthala (Journal of Agricultural and Food Chemistry, vol 48, p 909). “Antimicrobial chemicals added to modern toothpaste are equivalent to levels we get from the chewing stick,” says Christine Wu of the University of Illinois,