Nutritionally, olive oil is safe to cook with, but doing so may compromise its flavor.
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Yes, at certain temperatures, cooking can negatively affect the nutrient profile of olive oil.

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Health Benefits of Olive Oil
Extra-virgin olive oil is one of thehealthiest fatsyou can use.
The average smoke point of extra-virgin olive oil may be higher than you might think: 375F.
Some of the vitamin content may be destroyed by excess heat.

Youll retain more antioxidants and enjoy its rich, floral flavor, she says.
Changes to flavor aside, olive oileven extra-virgin olive oilis still asafe choice for cookingat or below 375F.
U.S. Department of Agriculture.Rising popularity of olive oil in the United States has boosted consumption over past 30 years.

FoodData Central Database.Oil, olive, salad or cooking.
Antioxidants(Basel).2019;8(8):246. doi:10.3390/antiox8080246
U.S. Department of Agriculture.
FoodData Central Database.Butter, Clarified butter (ghee).

U.S. Department of Agriculture.
FoodData Central Database.Oil, coconut.