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This is Scientific American's 60-second science. I'm Christopher in Taliatta.

The Mediterranean diet is well known for its heart-healthy effects.

It even sounds healthful.

Lots of fruits and veggies, whole grains, and legumes, plus olive oil, a bit of red wine,

and fish and poultry instead of red meat.

Now a study from Italy confirms that if you follow the

diet, you really can cut your risk of cardiovascular disease. But here's the catch. The benefits

seem to only occur if you're financially comfortable or well-educated. The findings in the

International Journal of Epidemiology. Researchers tracked 19,000 men and women, living in southern Italy during a four-year interval.

After controlling for habits like smoking and exercise, the team found that volunteers who

stuck more closely to the diet enjoyed greater protection against heart problems, but only

if they were college-educated or earned more than

40,000 euros a year, or about $47,000. The scientists think that higher-income, educated

individuals tend to prepare veggies in healthier ways, perhaps preserving more vitamins and antioxidants.

They also favored fish and whole-gra grain bread and ate more organic vegetables.

And perhaps they're simply able to afford higher quality foods, better olive oil, for example.

So you can buy the two, three euro bottle, or you can have a 10 euro bottle.

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