A cancer charity said the early findings were intriguing but required further study.
He is also involved in raising funds for children's cancer charities.
This led to her setting up a cancer charity in her daughter's name.
Hayes was also active in a number of cancer charities.
He was responding to concerns raised by 30 cancer charities.
Contributions may be made to a cancer charity of your choice.
All proceeds from the match went to children's and cancer charities.
This month, thousands of men have grown their facial hair in order to raise money for cancer charities.
Upon retirement from the game Done worked raising awareness for a cancer charity.
Besides, he said, part of the profits go to a cancer charity.