4 . Researchers have long been stumped(难住)by whether eating fish reduces the risk of developing type 2 diabetes. Some studies have shown that it does, while others have found no effect or concluded that it tends to increase the risk.

A Chalmers University of Technology study may explain the contradictory(矛盾的)results. The study compared blood samples and diet questionnaires from 842 participants, half of whom developed type 2 diabetes after about seven years. This showed that fish consumption as a whole has no effect on diabetes risk. Then, using a new data-analysis method, said one of the study author. "We screened(筛查)out the effect of environmental pollutants. We were then able to see that fish itself provides clear protection against type 2 diabetes.

However, participants who ate a lot of fatty fish, such as salmon, also had high levels of environmental pollutants in their blood. These fish are the most likely to contain accumulated pollutants such as DDT and PCB, which have both previously been linked to increased risk of type 2 diabetes.

To make sure the fish you eat is free from pollutants, check the Environmental Defense Fund's Seafood Selector(seafood edf.org) for the choices least likely to contain them, then look for wild-caught fish from sustainable sources, such as those certified by Marine Stewardship Council.

9 . A cancer survivor has become the first woman to complete an exhausting “Sea to Summit” triathlon (三项全能运动) which saw her swim, cycle, and run over 330 miles in just five days. Andrea Mason was overjoyed when she crossed the finish line early Wednesday morning.

The race was set in the French Alps. Setting off at 6:15 am on Friday, 39-year-old Mason battled through severe pain, and hallucinations (幻觉), but she pushed on---managing to complete the race in an impressive four days, 23 hours, and 41 minutes. Andrea had been diagnosed with cancer and needed life-saving surgery. Following a successful operation, she is now hoping to raise awareness of women’s health. In the past year, Andrea set up her own charity, Lady Talk Matters, in order to normalize the conversation surrounding female health.

Andrea, from Blackpool in Lancashire, England, said, “I am so happy all went according to plan as there were so many things that could have gone wrong. I wanted to do it in five days, and I did, but it was very tough. I had some low moments, particularly when I couldn’t sleep in my limited rest periods, and when I couldn’t keep any food down as I was running. For sure I had some doubts along the way as I was exploring the unknown with such a huge run, particularly as large parts of it were in the dark. It was bigger than I imagined, the impact on my body was huge, but every time I felt like giving up, I thought about all the women out there in pain or who still hadn’t been diagnosed. That is why I put myself through this.”

Andrea had to swim 23 miles around Lake Annecy, cycle 205 miles with 30,000 feet of vertical climbing around Mont Blanc, and run 105 miles with 4,000 feet of vertical climbing around The Ultra-Trail du Mont Blanc. You could say Andrea’s actually spent a lifetime training for an event like this. She completed her first three-mile race “powered by chocolate bars” when she was just four.