What Is an Omega-7 Fatty Acid?
Omega-7s are a group of unsaturated fatty acids, including palmitoleic acid, rumenic acid, vaccenic acid, and others. Palmitoleic acid is the most abundant omega-7 found in plant sources like macadamia nuts, avocado, and sea buckthorn oils. Olive oil contains palmitic acid, which the body converts to palmitoleic acid.
Did you know that your body produces omega-7 fatty acids in your tissues? Your body makes omega-7s on its own, so they are not considered “essential fatty acids” like omega-3 and omega-6. Omega-7s are one of the most abundant fatty acids in your tissues, especially in adipose (fat) and liver tissue.
Omega-7s have many functions in the body. Their benefits range from protecting your skin from premature aging to reducing internal and external inflammation. Although no dietary recommendations exist for the intake of omega-7s, their importance is well-supported by science.
Omega-7 vs. Omega-3, -6, & -9
You may wonder how omega-7s relate to the more popular fatty acids, omega-3, -6, and -9. The number refers to where the first (or only, if there’s one) double bond occurs on the molecular structure. In an omega-3 fatty acid, the first double bond occurs three carbon atoms from the end of the molecule.
Omega-3s, -6s, and -9s are polyunsaturated fats (PUFAs), while omega-7s can be monounsaturated (like palmitoleic acid), polyunsaturated fats, or even saturated (like rumenic acid). Mono- and polyunsaturated fats have fewer hydrogen atoms in their carbon chains and are considered healthier compared to saturated fats and are liquid at room temperature, rather than solid.
Top Omega-7 Benefits
If you’re looking for natural ways to reduce swelling, dampen skin irritation, curb hunger, or boost the health of your heart, don’t overlook omega-7s in your balanced diet or supplement toolkit. Below are the top benefits omega-7s provide.
Boosts Heart Health
Swelling in blood vessels may lead to conditions like high blood pressure and hardening of the arteries (atherosclerosis). Studies have found that omega-7 fatty acids can reduce your risk of these conditions by normalizing blood vessel swelling, both acute (short-term) and chronic. With less chronic cardiovascular swelling, you lower your risk of cardiovascular disease. Palmitoleic acid also encourages normal triglyceride levels in the body, which helps heart health. Last, but not least, omega-7s boost your immune system, which also reduces swelling and helps the heart.
Curbs Hunger & Reduces Weight Gain
Taking omega-7 fatty acids, whether in food or supplement form, may help you eat less. Omega-7s are proven to curb hunger by releasing a fullness hormone! When you feel more full and satisfied after a meal, you tend to eat less and lose weight. That’s exactly what happened in one study on laboratory rats. Consuming the omega-7 palmitoleic acid not only led rats to eat less, it also caused their bodies to release a fullness hormone. Olive oil did not have similar effects in the same study.
Other studies show that palmitoleic acid may reduce fat cell size and total lipids (fats) circulating in the bloodstream, while boosting fat-burning. A study on sheep found that the omega-7 fat-burning powers may operate by increasing fatty acid oxidation and normalizing how much glucose is taken up by cells. Another study also found that omega-7s balanced insulin resistance in people prone to developing type 2 diabetes, and other studies suggest it has a positive impact on metabolism. Overall, these factors may help curb hunger and weight gain.
Maintains Skin Health
If you want to have healthy skin, nails, and hair, consider omega-7s! They may prove useful as part of your anti-aging beauty regimen for multiple reasons. When exposed to chemicals, pollution, or the sun, your skin cells get “oxidized,” which leads to premature skin aging. Omega-7 fatty acids protect against this “oxidative cell damage” by spurring the creation of new skin cells. Omega-7 fatty acids spark the body’s production of new skin cells, and also boost collagen and elastin levels.
Omega-7s also boost the body’s production of collagen and elastin, proteins that keep your skin youthful and supple, with fewer wrinkles. Sea buckthorn berries, sold as a supplement, not only contain high levels of palmitoleic acid, but also tocopherols, a form of vitamin E that protects cells against sun damage, provides moisture, and reduces swelling. Sea buckthorn oil also increases blood circulation and can protect against infections and allergies.
Normalizes Insulin Resistance
When a person experiences insulin resistance, cells cannot as easily absorb insulin, a protein that shuttles blood sugar (glucose) into muscles and throughout the body. As a consequence, the body pumps out more insulin in an attempt to regulate blood sugar levels. If insulin resistance continues, the body can reach a prediabetic state, when blood glucose levels remain high. Some animal studies have found that omega-7s protect against insulin resistance.
Palmitoleic acid may also improve glucose metabolism, or, in other words, breaking down glucose so that it does not build up in the blood. This is especially useful for people at higher risk of diabetes, prediabetes, or metabolic syndrome.
Reduces Swelling
Redness and swelling, part of your body’s immune response, can be helpful when your body is responding to an injury, whether it’s a bug bite or a bump on the head. But when inflammation becomes chronic and remains in your body, it can cause concerns. Studies found that sea buckthorn’s palmitoleic acid may reduce chronic swelling in various ways. Omega-7s like palmitoleic acid may curb the body’s swelling in response to chronic conditions such as ulcerative colitis, a form of inflammatory bowel disease. It may also help dry eyes, which is connected to inflammation.
Heavy alcohol usage or obesity can also cause internal organs to swell, leading to alcoholic and non-alcoholic fatty liver disease. People with organ swelling may benefit from taking omega-7 fatty acid. Omega-7s also help get both your good cholesterol (HDL) and bad cholesterol (LDL) where they need to be. It does this by balancing levels of an inflammatory marker called C-reactive protein (CRP).
Best Omega-7 Sources
You can find omega-7s in foods, particularly oils, but also in supplement form. Here are the most common sources. Medical professionals have not established an omega-7 recommended dosage, but eating foods rich in this fatty acid can help you stay on top of your game.
Macadamia Oil
The macadamia nut is one of the best sources of omega-7 fatty acids. It contains 80 percent monounsaturated fatty acids — around 60 percent oleic acid (an omega-9 fatty acid) and approximately 20 percent palmitoleic acid. Macadamia oil is one of the richest sources of omega-7s. Not only is it a heart-healthy oil, but it’s a great cooking agent. A diet that contains moderate amounts of macadamia oil may be beneficial. Its unique balance of fats makes this oil heart-healthy. It protects against heart disease by protecting cells from oxidative stress. Also, monounsaturated fats are less susceptible to going bad than polyunsaturated fats, so they are better for cooking and can handle higher temperatures.
Sea Buckthorn Oil
The oil from sea buckthorn contains a great source of omega-7s, especially for use on the skin and hair. Extracted from the pulp, the oil is also rich in vitamins C and A, the latter of which causes its orange color. You will often find sea buckthorn in beauty products due to its collagen-boosting and elastin-enhancing properties. This omega-7-rich oil isn’t for cooking. Try sea buckthorn oil as a face serum or a capsule to receive its powerful benefits. Filled with antioxidants, sea buckthorn oil also protects against cell damage when used both externally and internally. Apply a small amount to skin after cleansing and adding serum to lock in the moisture and form a protective barrier on your skin. Or take a capsule to encourage similar benefits from the inside out.
Avocado Oil
The oil from avocado fruits contains palmitoleic acid, in addition to other monounsaturated, polyunsaturated, and saturated fats. You can substitute avocado oil for other cooking oils; it has a very high smoke point (520 degrees Fahrenheit), meaning it can tolerate higher temperatures than many other oils. In fact, its smoke point is higher than extra-virgin olive oil and sunflower oil.
