When in the correct balance with omega-3 fats, omega-6 fats are healing fats. Like omega-3 fatty acids, omega-6 fatty acids are polyunsaturated fats. There are healthy and unhealthy sources of omega-6 fats. Healthy sources include sunflower seeds, wheat germ, sesame seeds, and walnuts. When eaten in the ideal ratio with omega-3 fats (between 4:1 and 1:1), these omega-6 fats promote health.
The worst type of dietary fat is the kind known as trans fat. It is a byproduct of a process called hydrogenation that is used to turn healthy oils into solids and to prevent them from becoming rancid. Trans fats have no known health benefits and that there is no safe level of consumption. Therefore, they have been officially banned in the United States.
The type of fatty acids that make up coconut oil’s saturated fat content is medium chain triglycerides (MCT) and are about 65% of its fat content. Unlike long chain fatty acids (the majority of fats in our diet) which must go through modification prior to being digested and absorbed in our bodies, medium chain triglycerides are passively diffused from our gastrointestinal tract to the portal system. In other words, our bodies find it super easy to break down the fat before getting rapidly absorbed and used for energy by the body. Coming from a clinical background, MCT’s are very commonly used in treating people who have malabsorption issues, are on ketogenic diets, or are increasing calories without much volume.
Plus, subsequent studies have also found that picking the right types of fat and adding plenty of high-fat foods to your diet could actually bring some big benefits to your health. One study in the New England Journal of Medicine found that when subjects ate either a Mediterranean diet, low-fat diet or low-carb diet, those following a high-fat, low-carb meal plan not only lost the most weight but also drastically reduced their bad cholesterol levels. (2)
Research supports the effectiveness of consuming more healthy fats. In a recent study of 60 people with mild abdominal obesity, researchers found that eating a high-monounsaturated-fat diet or a Mediterranean diet, which contains both monounsaturated fats and omega-3 fats, raised HDL cholesterol levels and lowered low-density lipoprotein (LDL) levels. And a number of studies have shown that having a higher HDL level reduces the risk of heart disease and might also reduce the chances of plaque building up in the arteries.
All foods containing fat have a mix of specific types of fats. Even healthy foods like chicken and nuts have small amounts of saturated fat, though much less than the amounts found in beef, cheese, and ice cream. Saturated fat is mainly found in animal foods, but a few plant foods are also high in saturated fats, such as coconut, coconut oil, palm oil, and palm kernel oil.
But wait, bile isn’t the only thing added in here, our pancreas also adds pancreatic digestive juices called lipase to the duodenum which helps break down triglycerides into two fatty acids and a monoglyceride. After this step, though, the fat droplets don’t just disappear. Instead the fatty acids and monoglycerides are absorbed in the microvilli (remember these from Digestion, part I?) and reassembled into triglycerides.
Fat tends to be considered “bad” because it is associated with weight gain and high cholesterol. However, certain types of fat give protective benefits to the heart if appropriate portions are consumed. The key is to understand how to choose the right amount of each type of fat, so we should look closely at the ideas of total fat and each type of fat.
Most people have been trained to choose low-fat foods over high-fat foods. Fat has always been positioned as a dietary enemy, so it’s no wonder it can get totally confusing when doctors and dietitians sing the praises of what they call healthy fats. You probably know that avocado is one of them, and that this nutrition revelation is responsible for their rise from guac staple to Instagram stardom in recent years. And of course there’s olive oil, the lynchpin of the Mediterranean Diet. But there are plenty more healthy, high-fat foods you should definitely be working into your meals and snacks on a regular basis. Here’s what you ought to know.
Omega-3 fatty acids. One type of polyunsaturated fat is made up of mainly omega-3 fatty acids and may be especially beneficial to your heart. Omega-3, found in some types of fatty fish, appears to decrease the risk of coronary artery disease. There are plant sources of omega-3 fatty acids. However, it hasn't yet been determined whether replacements for fish oil — plant-based or krill — have the same health effects as omega-3 fatty acid from fish.
Healthy fats are easy to incorporate into snacks or appetizers. Guacamole served with sliced raw vegetables is one of the healthiest appetizers/snacks you can have. Walnuts and other nuts are delicious and crunchy. Nut butters are wonderful with celery sticks and other crunchy, raw vegetables. You can also top sliced granny smith apples with nut butters or layer slices of apples with slices of grass-fed cheese. Grass-fed cheese is also delicious with olives and is very satisfying.
Monounsaturated fats are typically liquid at room temperature but solidify if refrigerated. These heart-healthy fats are typically a good source of the antioxidant vitamin E, a nutrient often lacking in American diets. They can be found in olives; avocados; hazelnuts; almonds; Brazil nuts; cashews; sesame seeds; pumpkin seeds; and olive, canola, and peanut oils.
Fat came under scrutiny in the 1960s when the sugar industry paid Harvard researchers to publish a review on sugar, fat, and heart disease. The sugar industry funded the research to cover up warning signs, which emerged in the 1950s, that sugar caused heart disease (1). Shifting the blame away from sugar, the researchers singled out saturated fat as the cause of heart disease.
Additionally, over 90% of soy, corn, cotton (seed), and canola grown in the US are GMO. Olive oil is not a GMO oil. However, some restaurants blend olive oil with cheaper oil, such as canola oil. There are serious health risks associated with GMO foods, including immune system malfunction, accelerated aging, changes in the gastrointestinal system (leaky gut), and faulty insulin regulation.
The healthy fats I want in your diet are the monounsaturated, found in olive oil, avocado, flaxseed oil, and nuts, and the polyunsaturated in the form of omega-3s, like fatty fish (tuna and salmon), walnuts, eggs, and chia seeds. (Skip polyunsaturated in the form of processed vegetable oils like canola, sunflower, and safflower, which are made up of mostly omega-6 fatty acids.) These healthy fats are linked to strong immunity, improved cardiovascular functioning, reduced inflammation, and improved brain functioning.
A welcome addition for vegetarians and vegans, nuts and seeds are a terrific option for getting more healthy fats into your diets. For starters, they’re extremely easy to incorporate into your diet; they’re also fairly affordable and easily transportable, making them perfect for snacking. Aside from being a great source of healthy fats, nuts and seeds offer a wealth of benefits for our bodies. Regularly eating them can help lower bad LDL cholesterol to keep your arteries clear and your heart healthy. And like other foods rich in omega-3s, nuts and seeds are also considered brain foods, and certain types are even recommended to help improve mood and defeat depression. (21)
Get more avocados in your diet by trying one of these avocado recipes. Alternatively, use it to cook with by adding avocado oil to your kitchen pantry. It has a mild taste that won’t overpower dishes the way other oils might and also has a high smoke point, which means it works well for grilling or frying. And because it remains a liquid at room temperature, it’s a tasty choice to drizzle on salads, sandwiches or veggies.