June 26, 2012- A new study published this week found that women who exercised five days per week for an average of two hours per day were 30% less apt to develop breast cancer, than women who were less active. The intensity or type of exercise did not factor in all that was needed was moderate physical exercise, which included things such as walking, household chores or even gardening.
The study involved more than 1,500 women who had breast cancer and more than 1,550 who were similar but did not have cancer. All the women were between 20 and 98 years of age. The women were given questionnaires about the type of physical activity they had done throughout their adult life – any exercise they took part in for a minimum of one hour each week for three months or longer. A score was then calculated for physical activity they then used to compare to all participants.
Overall, even women that did the least amount of exercise lowered their risk of developing breast cancer by 6% compared to those who did nothing at all. Other groups of women had even more benefits. The effect of exercise was the highest in women who had children and in addition exercised between 10 and 19 hours weekly. For them their exercise resulted in a 30% lower risk of developing breast cancer compared with women who did not have any physical exercise.