New Delhi, Jan 29 (ANI): A new study has revealed that girls who drink a can and a half of sugary cola, lemonade or other fizzy drinks a day are increasing their risk of breast cancer.The study found that around half a litre a day of sugary cola, lemonade or other fizzy drinks cause early puberty and increases breast cancer risks in girls by 5 percent for each year they mature earlier, an online portal reported. Drinks with added sugar ramp up insulin concentration in the body, leading to higher concentrations of sex hormones, which are normally associated with periods starting earlier, a condition that is on the rise in developed countries. Researchers added that unlike most other predictors, sugar-sweetened beverages consumption can be modified and this research shows that it's even more important that children switch to water.