Olive Oil's Health Benefits Questioned, With Healthier Alternatives Suggested
While olive oil offers heart-healthy fats and antioxidants, its high calorie count and potential for overconsumption may negate benefits, according to a nutritionist.
Olive oil, long hailed as a cornerstone of the Mediterranean diet and lauded for its health benefits, may not be the unqualified health elixir it is often perceived to be, according to nutritionist Rob Hobson. While it contains beneficial monounsaturated fats and antioxidants, its high calorie density means it could contribute to weight gain if not consumed mindfully.
Research from Kyoto University in Japan suggests that consuming a small amount of olive oil before carbohydrates can reduce blood sugar spikes, potentially aiding in the prevention of type 2 diabetes. This effect is partly attributed to increased levels of GLP-1, a hormone that acts as a natural appetite suppressant, similar to those found in popular weight loss medications.
However, Hobson points out that olive oil is more calorific than butter. A tablespoon of olive oil contains approximately 120 calories and 14 grams of fat, compared to butter's 100 calories and 11 grams of fat. Crucially, olive oil has only 2 grams of saturated fat per tablespoon, significantly less than butter's 7 grams. Saturated fats are recommended to be limited to 20-30 grams per day due to their potential to damage blood vessels and increase heart disease risk.
The primary fat in olive oil is oleic acid, a monounsaturated fat, which, along with polyunsaturated fats like linoleic acid (an omega-6 fat), is beneficial for heart health, especially when replacing saturated fats. These healthy fats help remove LDL, or 'bad' cholesterol, from blood vessels. Olive oil also contains polyphenols, plant compounds with antioxidant properties that protect cells from damage.
A 2022 meta-analysis of 36 studies in the Journal of Clinical Nutrition indicated that consuming 25 grams of olive oil daily (nearly two tablespoons) was associated with lower risks of cardiovascular disease, type 2 diabetes, and all-cause mortality. However, the study authors noted that the observational nature of the data means other factors could be influencing these outcomes.
Hobson emphasizes that the key to realizing olive oil's benefits is not simply adding it to the diet, but rather swapping it for other fats like butter or margarine. He cautions that people often