Consuming too much of anything can lead to sickness, although WebMD explains that the olive and its derivatives contain numerous health benefits. Olive oil, for example, can lower LDL cholesterol while conserving HDL cholesterol. Olive oil also reduces the accumulation of heart plaque, thus safeguarding against heart disease.
According to WebMD, the use of olive oil has also been linked to decreases in the risk of stroke. Patients suffering from high blood pressure saw a reduction when using extra-virgin olive oil and adhering to a diet low in saturated fat. Additionally, olive oil's health benefits possibly extend to protecting against cancer, as it may act as an antioxidant and promote the death of cancerous cells.