A buddy of mine has lost 19KG... i asked him what his best tip was to lose weight.. he said he only drinks water.... never EVER drink Coca cola, pepsi or whatever you like as a soda again... not even the Light / zero shit...
Drink water like a motherfucker and you are bound to lose weight... I stopped drinking it and lost a KG in less than a week
Soda containing sugar (cola, fanta, sprite, etc..) are horrible on the body, and are worse for your health then smoking sigarettes or alcohol abuse. (your liver is much more resillient then your cardiovascular system)
However, from at least cola light, i can confirm its totally harmless, and can be looked at as a more acid version of water with a taste some (like me) like
There have been claims that cola light, and other aspartane based drinks, cause cancer. It doesnt, and i'll explain why.
Aspartane breaks down in 2 amino acids , aspargine acid and phenyl analine, and methanol.
Methanol is a toxic that causes blindness. However, that requires a certain dose. The amount of methanol formed from the aspartane in a glass of cola light, is less then the methanol formed from a glass of orange juice. Its far to tiny to have any effects.
However, when they tested it on rats, they gave such an immense overdose, that methanol was present in significant amounts, leading to cancer.
The reason why you lost weight, is dehydration. Its common used by athletes in a weight cathegory to make their group. However, if you drink sufficient water tomorrow, that kilogram will be back immediatly.
Your friend simply stopped drinking sugar based soda, and its damn good he did.
If YOU want to lose weight, then drink gallons of water and work out. High hydration helps the breakdown of fat and increases the effectivity of cardio