A study conducted by researchers at Johns Hopkins University School of Medicine found that high-fat, low-carb diets may help people lose weight  more quickly than high-carb, low-fat diets, the New York Times reports. Not only that, the high-fat diet will not contribute to heart disease any more than the low-fat diet—in the short term.

Researchers studied 23 men and women who each weighed an average of 218 pounds. They were put on a diet of no more than 30 percent of calories from carbs and as much as 40 percent of calories from fat. Twenty three other men and women were put on a low-fat diet with no more than 30 percent of their daily calories coming from fat and 55 percent from carbs. Both groups exercised moderately.

The high-fat group lost 10 pounds in 45 days while the low-fat group took 70 days to lose the same amount of weight. When checked for vascular differences, including arterial stiffness, the high-fat dieters did not show any harmful changes.

Doctors consulted for the Times article were quick to point out that the study was conducted in just three months and after years of adhering to the high-fat, Atkins-like diet, cardiovascular damage could form.

Bottom line: If you need to lose weight, check with your doctor to figure out what type of diet is best for you, given your health history.