Yesterday, Harvard University researchers reported the first-ever finding which demonstrated people drinking from bottles made of BPA, passed urine having that chemical at a concentration which was more than two thirds higher than before.

During the study, participant students first drank solely from stainless steel bottles for a week in order to wash out existing BPA from their bodies. Then they drank from BPA bottles for a week.

The study's leader Jenny Carwile, a Harvard doctoral student said, "demonstrated that BPA is linked to adverse health effects, this study fills in a missing piece of the puzzle-whether or not polycarbonate plastic bottles are an important contributor to the amount of BPA in the body."

BPA is frequently used to harden plastic and make it non-breakable, and also to line the insides of certain food containers. Experts do not agree with the idea it is harmful to humans.

Meanwhile, on Friday the Connecticut House of Representatives gave final approval to a law banning the sale of plastic baby bottles, food containers and cups containing Bisphenol-A.

The bill, if signed by Gov. M. Jodi Rell, would be effective Oct. 1, 2011 onwards.