Bryan Reilly has a full-time job and a passion for exercise. He skis, climbs mountains, works out regularly, and runs a mile in under 8 minutes.
Any 56-year-old could be proud of being so fit. But for Reilly, it’s a special triumph: Less than two years ago he was diagnosed with an often-lethal and aggressive brain tumor.
There are a lot of good reasons not to gain too much weight, but you might not be aware of this one: Growing evidence links obesity to a higher risk of developing cancer, and being overweight may worsen a cancer patient’s outlook.
Although more and more studies are finding this connection, scientists haven’t uncovered the biological mechanisms by which excess pounds make normal cells more likely to turn cancerous. But they are pursuing a large number of leads, some of which may uncover new ways of fighting cancer – including losing weight.