Sunflower oil linked to better cholesterol readings, study finds
WebMD News from HealthDay
By Steven Reinberg
HealthDay Reporter
THURSDAY, Oct. 16, 2014 (HealthDay News) -- Muffins -- and other fatty foods -- can definitely put on the pounds, but those made with polyunsaturated oil may be safer for your heart than if they're made with saturated fats like butter, a small study suggests.
That's because olive oil, sunflower oil and other polyunsaturated fats won't increase cholesterol like butter or palm oil, the researchers found.
Thirty-nine healthy young adults in Sweden were asked to add four muffins a day to their diet so that researchers could evaluate the effects of different cooking fats.
All of the volunteers gained weight, but those whose muffins were made with unsaturated sunflower oil had better cholesterol levels after seven weeks than the group that ate muffins baked with butter or palm oil, another saturated fat, the study found. High cholesterol is linked with an increased risk of heart disease.
"Even modest weight gain of less than 4 pounds may have adverse effects, but having sufficient amounts of polyunsaturated fats and less saturated fats may prevent some of the unwanted consequences with weight gain," said lead researcher Dr. Ulf Riserus, an associate professor of clinical nutrition and metabolism at Uppsala University in Sweden.
However, no one can eat a steady diet of sugary muffins and get off scot-free. Both groups showed increased insulin resistance, a warning sign of adult-onset diabetes, Riserus said.
The researchers aimed for participants, whose average age was 27, to gain about 3 percent of their body weight. Muffins were added or subtracted to keep weight gain within that range, while the volunteers continued their normal diet and physical activity.
Over seven weeks, people in both groups gained about 2.2 percent of their body weight. However, those whose muffins contained unsaturated fat had lower levels of bad cholesterol (low-density lipoproteins, or LDL). They also had higher levels of good cholesterol (high-density lipoproteins, or HDL) than those whose muffins were made with saturated fat, the researchers found.
LDL levels between the groups differed by 9 percent. In terms of overall cholesterol/HDL cholesterol ratio, the difference was as much as 18 percent, the researchers said. This is important because this ratio seems to predict heart disease risk even better than LDL levels alone, Riserus said.
A diet high in polyunsaturated fats rather than saturated fats lowers cholesterol, Riserus said. Polyunsaturated fats include safflower oil, corn oil, soybean oil and canola oil, according to the U.S. Centers for Disease Control and Prevention.
"As more than half of the Western populations consume an excessive amount of calories and gain weight over time, these results are clearly relevant and suggest that regular intake of vegetable oils and nuts are of some benefit also in people who are gaining weight," Riserus said.
source : If You Do Gain Weight, Polyunsaturated Fats May Prevent Some Damage
