Fitness may lower breast cancer risk

Findings offer tantalising new clues into relationship between fitness, exercise and malignancies

Aerobic fitness seems to alter the interior workings of cells in ways that may substantially lower the risk of breast cancer.

A new study with female rats found that those that were the most fit were much less likely than other animals to develop cancer after exposure to a known carcinogen, even if they did not exercise.

The findings offer tantalising new clues into the relationship between fitness, exercise and malignancies.

Most of us probably think that cardiovascular fitness, which in broad, scientific terms is the ability to get oxygen and energy to muscles, is built with diligent exercise, and that the more