Olives are a fruit that grows on an evergreen tree. Olive oil is an important food in the Mediterranean diet. This eating style has been linked to better health and a lower risk of chronic diseases.
Olive leaves have also been used historically in the Middle East as an herbal treatment for various health problems. But there is very little scientific evidence supporting its use.
Why do people use olive?
People use olive oil to try to prevent or treat:
Research suggests that olive oil may protect against heart disease. Death rates from coronary heart disease are low in countries where people use olive oil as their main source of fat. One study found that people who ate the most olive oil had a lower risk of a first heart attack compared to those who ate the least.
Strokes. A 2011 study found that older people who frequently used olive oil had a 41% lower risk of stroke than those who never used it.
Cancer. Components of olive oil called phenolics may help inhibit cancer in several ways. For example, they may:
- Reduce inflammation in the body
- Act as an antioxidant (nutrient that helps repair cell damage)
- Lead to the death of cancer cells
Lab tests have found anti-cancer effects from several types of phenolics in olive oil.
Some people also use olive leaf to try to treat infections. Research has shown that olive leaf extract may inhibit bacteria and fungi. It may also work against viruses and act as an antioxidant. Still, there is very little evidence supporting the use of olive leaf extracts, compared with the many studies supporting the consumption of olive oil and its effect on health.
Experts recommend getting 20% to 35% of your daily calories from fat, including oil. Most should be in the form of monounsaturated fat such as olive oil.
Optimal doses of olive leaf have not been set for any condition. Quality and active ingredients in supplements may vary widely. This makes it hard to set a standard dose.
Can you get olive naturally from foods?
Olives and olive oil are available in supermarkets. Olive leaf is used for making tea in some parts of the world.
What are the risks of taking olive?
Side effects. Little is known about any adverse effects from olive leaf. Olive oil or olives, as food, are safe.
Risks. Avoid olive leaf if you're allergic or hypersensitive to olives, olive leaves, or related plants. Use with caution if you're taking antiviral medicine. And avoid olive leaf if you're pregnant or breastfeeding, as little is known about its safety in these cases.
Interactions. Due to olive oil's ability to lower blood sugar and blood pressure levels, caution may be needed for people taking drugs for those conditions.
Supplements are not regulated by the FDA the same way that medicines are. They are treated as foods and do not have to prove that they are safe or effective before being sold on the market..