NEW DELHI- A recent research conducted by All India Institute of Medical Science has revealed that men who smoke or take in tobacco in other forms are more likely to parent the children suffering from cancer.
This is because microelements present in smoke cause oxidative stress that affects the genetic integrity of the sperm. This can also lead to infertility.
Professor Rima Dada, in charge of the laboratory for molecular reproduction and genetics at AIIMS, said sperm has minimal antioxidants and its DNA repair mechanism is also deficient, thus making it more vulnerable to oxidative DNA damage.
The study, which has also been published in a recent issue of the Asian Pacific Journal of Cancer Prevention, analyzed the sperm quality of 77 men whose children suffer from retinoblastoma (a type of eye cancer) and 53 fathers of healthy kids.
Eleven fathers who smoked regularly were asked to include yoga and meditation in their routine for six months at All India Institute of Medical Sciences. Dr. Dada said this lead to a significant decrease in markers of inflammation and a decline in seminal free radical levels.
It also led to a slow but significant improvement in the DNA quality. Other environmental factors being studied as causes of sperm damage include electromagnetic radiation from mobiles, pollution and alcohol.
While the sperm count of a normal Indian adult was 60 million/ml three decades ago, it now stands at 20 million/ml. Over 12-18 million couples are diagnosed with infertility every year.
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