PHILLIPS: A new study is putting fast forward as a possible way to beat heart problems. CNN medical correspondent Elizabeth Cohen chews on the facts.</s>ELIZABETH COHEN, CNN CORRESPONDENT: Many different religions prescribe fasting, and that has doctors wondering, does fasting have any effect on health? Well, researchers in Utah were wondering this, and so they looked at Mormons. Many Mormons, they fast the first Sunday of every month for 24 hours: no food, no water. And when doctors actually looked at their arteries, they found those observant Mormons who fasted had a 39 percent lower risk of having clogged arteries. Now, at this point, doctors are not recommending fasting. This is not a definitive study by any means. But they are hypothesizing as to why fasting may lead to better arterial health. And they think one reason might be, is that when you don't have any sugar in your body for 24 hours, it gives cells that are involved in insulin production a rest, and perhaps they might work better and more effectively after that rest. Another explanation is much more psychological. Doctors think perhaps that those who are disciplined enough to go without food and water for 24 hours once a month, maybe they're just disciplined about making other good food choices in general. Back to you.</s>PHILLIPS: Police say for more than 30 years, a serial killer used police tactics to cover his tracks. We're going to tell you how he reached the end of the line. Culture clash: east versus west, north of the border. It may have cost a teenager her life.
Study: Fasting May Lead to Better Arterial Health