Career
He established the Goa Cancer Society and founded the Gosalia Memorial Cancer Hospital and the National Organisation for Tobacco Eradication. He convinced the Goa Assembly to pass the Goa Prohibition of Tobacco Acting 1997. The law has been the harbinger of similar laws in the rest of India and was far ahead of similar laws in Europe.
Vaidya spent thirty years on tobacco research.
The educational material he produced is now included in the regular curriculum of schools since 1994. In 1986, he was awarded an Ornamental Silver Lamp and Certificate of Appreciation at the 25th Silver Jubilee celebrations at the hands of the president of India, for "his outstanding contribution to Goa"s progress".
