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Olive oil, just once a week, can lower your risk of a blood clot

Consuming olive oil once a week reduces the risk of forming arterial blood clots in obese adults. In a new study, researchers from the New York University School of Medicine found that olive oil consumption lowers platelet activity in obese adults.

Platelets are small blood cell fragments that form clumps when activated. When a blood vessel gets damaged, platelets rush to the site of injury to form clots and stop the bleeding. However, as beneficial as they are, these platelets also contribute to the buildup of plaques in the arteries, which leads to a condition called atherosclerosis.

According to Sean Heffron, lead author of the study, atherosclerosis is the underlying cause of most heart attacks and strokes.

Regular intake of olive oil prevents excessive platelet aggregation

Using food frequency surveys, the researchers determined how often 63 obese, nonsmoking, and non-diabetic participants with an average BMI of 44.1 consumed olive oil. They found that those who consumed olive oil once a week had lower platelet activation than those who ate olive oil less often. Moreover, participants who ate olive oil more frequently had the lowest amount of platelet aggregation.

The researchers believe that, aside from the antioxidants found in olive oil, its anti-platelet effect is linked to its molecular structure. (Related: Olive oil is the healthiest choice when it comes to frying food, study finds.)

“People who are obese are at increased risk of having a heart attack, stroke or other cardiovascular event, even if they don’t have diabetes or other obesity-associated conditions. Our study suggests that choosing to eat olive oil may have the potential to help modify that risk, potentially lowering an obese person’s threat of having a heart attack or stroke,” said Heffron.

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Co-author Ruina Zhang further explained: “To our knowledge, this is the first study to assess the effects of dietary composition, olive oil specifically, on platelet function in obese patients.”

The researchers presented their preliminary findings at the American Heart Association’s Epidemiology and Prevention/Lifestyle and Cardiometabolic Health Scientific Session 2019 in Houston.

Foods typically consumed on the Mediterranean Diet

Olive oil is a key component of the Mediterranean Diet, which promotes heart health. This diet is based on the traditional foods that people from Italy and Greece ate during the 1960s. The Mediterranean Diet involves a high intake of healthy, plant-based foods and minimal consumption of animal-based foods. The list below includes some of the common foods people on the Mediterranean Diet eat.

Olive oil

  • Serving size: 1 tablespoon
  • Calories per serving: 120
  • Nutrients per serving: 13 grams (g) of fat, of which 2 g is saturated
  • Benefit/s: Olive oil can reduce the risk of cardiovascular diseases


  • Serving size: 1 cup
  • Calories per serving: 32
  • Nutrients per serving: 1.5 g protein, 7 g carbohydrates, 2 g fiber, 5 g sugar
  • Benefit/s: Tomatoes contain lycopene, a powerful antioxidant associated with reduced risks of some cancers like prostate and breast cancer. Tomatoes also contain compounds that support cardiovascular health by reducing the risk of blood clot.


  • Serving size: 3 ounces (oz)
  • Calories per serving: 133
  • Nutrients per serving: 22 g protein, 5 g fat
  • Benefit/s: This fatty fish is a rich source of omega -3 fatty acids, which promote heart health. The American Heart Association recommends consuming fatty fish at least twice a week.


  • Serving size: ½ cup
  • Calories per serving: 72
  • Nutrients per serving: 1.5 g protein, 1 g fat, 16 g carbohydrates, 4 g fiber, 12 g sugar
  • Benefit/s: Pomegranates are rich in polyphenols – plant compounds known for their antioxidant and anti-inflammatory properties. In a study published in the journal Advanced Biomedical Research, researchers reported that pomegranates contain compounds that have anti-cancer properties.

Greek yogurt

  • Serving size: 7 oz
  • Calories per serving: 146
  • Nutrients per serving: 20 g protein, 4 g fat: 2 g is saturated, 1 g is monounsaturated; 8 g carbohydrates, 7 g sugar
  • Benefit/s: Greek yogurt is rich in calcium, a mineral essential to bone health

Olive oil is a great alternative to other fats and oils currently available in the market. has more about olive oil and the Mediterranean diet.

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