MURKY STATEMENT IN LUNG CANCER PREVENTION

Diets deficient in vitamin A and C and Beta-carotene have been associated with increased risk of lung cancer!  However "there is no role for Beta-Carotene, Vitamin A or any other derivatives for the chemoprevention of lung cancer".  The truth is Beta-carotene  is associated with an increased risk of lung cancer among heavy smokers!  A protective role of against lung cancer by Beta-carotene vitamin A or their derivatives, was not found in prospective trials.   Briefly if you diet misses it, it is bad,  but if you happen to take it, there is no purpose!  Go figure!  To ask question about such an unresolved issue is clearly dishonest, don't you think...!