My dad had lung cancer and I am worried that I made develop it. Is there any vitamin I can take to reduce my chances of developing lung cancer?

Stop worrying, there is nothing you can do for lung cancer except stop smoking. There is nothing out there that you can take to prevent cancer. There is a lot of hype made about vitamin C, vitamin e and selenium but there is no evidence that these minerals can prevent lung cancer. If you don’t smoke, then keep away from people who do.