It can be bad to eat a lot of mentos as they are not really all that healthy.
Since Mentos are essentially candy and candy in excess is unhealthy then eating too many mentos could have some bad effects on your health.
The mentos may also cause weight gain and spike your blood sugar levels as well.
Mentos are a type of candy mints.
Mentos are made up of Sugar, Wheat Glucose Syrup, Hydrogenated Coconut Oil, Rice Starch, Natural Flavors, Gum Arabic, Sucrose Esters Of Fatty Acids, Gellan Gum, Carnauba Wax, Beeswax.
Mint-flavored Mentos contain sugar, wheat glucose syrup, hydrogenated coconut oil, rice starch, natural flavors, gum arabic, sucrose esters of fatty acids, gellan gum, carnauba wax, and beeswax.
Fruit-flavored Mentos contain sugar, wheat glucose syrup, hydrogenated coconut oil, citric acid, fruit juices from concentrate (strawberry, orange, lemon) (1%), rice starch, gum arabic, natural flavors, sucrose esters of fatty acids, gellan gum, carnauba wax, colors (beta-carotene, beetroot red), and beeswax.
The formulation can vary based on country of manufacture.