This will always be the most popular question I receive after writing these Basic posts and my answer each time is, it depends! It depends on your lifestyle, your health and fitness goals, your digestion, activity level, and genetics. Good thing, though, that I really love figuring all that out for you so you don’t have to! Just email me and we’ll set up a consultation about your goals and how you can meet your needs without eating too much or too little for optimal health.
The dietary reference intake (DRI) for fat in adults is 20% to 35% of total calories from fat. That is about 44 grams to 77 grams of fat per day if you eat 2,000 calories a day. It is recommended to eat more of some types of fats because they provide health benefits. It is recommended to eat less of other types of fat due to the negative impact on health.
One medium avocado has approximately 23 grams of fat, but it is primarily monounsaturated fat. Plus, a medium avocado contains 40 percent of your daily fiber needs, is naturally sodium- and cholesterol-free, and is a good source of lutein, an antioxidant that may protect your vision. Try enjoying it in place of foods that are higher in less-healthy saturated fat—use 1/5 of a medium avocado to replace the mayo on your sandwich, the butter on your toast, or the sour cream on your baked potato. Keep in mind that they’re pretty high in calories, so you generally want to stick to no more than 1/4 an avocado at a time.
Certain types of fat also possess anti-inflammatory properties, which can help protect against chronic disease and help improve health. Omega-3 fatty acids, for example, have been shown to relieve inflammation and reduce symptoms of autoimmune conditions like rheumatoid arthritis, psoriasis and Crohn’s disease. (35) Monounsaturated fatty acids, on the other hand, may help increase good HDL cholesterol, lower triglyceride levels and decrease the risk of heart disease. (36)
What these studies highlight is that when cutting down on saturated fats in your diet, it’s important to replace them with the right foods. For example, swapping animal fats for vegetable oils—such as replacing butter with olive oil—can help lower your cholesterol and reduce your risk for disease. However, swapping animal fats for refined carbohydrates-such as replacing your breakfast bacon with a bagel or pastry-won’t have the same benefits. That’s because eating refined carbohydrates or sugary foods can have a similar negative effect on your cholesterol levels, your risk for heart disease, and your weight.
Healthy fats are unsaturated fats that are found in fatty fish like salmon, avocados, nuts and seeds, plant oils that are liquid at room temperature like olive oil, and coconut oil. Coconut oil is contested as a healthy fat because it is a saturated fat, but because the majority of its fat content is medium-chain triglycerides (MCT), I consider them an exception.
The overarching message is that cutting back on saturated fat can be good for health if people replace saturated fat with good fats, especially, polyunsaturated fats. (1, 15, 22) Eating good fats in place of saturated fat lowers the “bad” LDL cholesterol, and it improves the ratio of total cholesterol to “good” HDL cholesterol, lowering the risk of heart disease.
Cheese is an excellent source of protein, calcium, vitamins, minerals and fatty acids, and it helps slow down the absorption of sugar and carbohydrates, leading to consistent energy levels and improved brain function. It may also help lower your risk of diabetes: people who eat a lot of high-fat dairy products actually have the lowest incidence of diabetes, according to a 2015 study of 26,930 people in the American Journal of Clinical Nutrition. Those who ate a lot of low-fat dairy products had the highest incidence. The researchers speculated that while calcium, protein, vitamin D and other nutrients in cheese are indeed good for us, we need the fat that goes along with them in order to get their protective effects. Just make sure it’s real, full-fat cheese and not wood chips.
As SELF has previously reported, research is starting to suggest that consuming full-fat dairy products over low-fat or fat-free ones may have weight-control benefits. It may even help reduce type 2 diabetes risk. One cup (8 ounces) of whole milk contains 8 grams of fat with 5 grams saturated fat versus skim milk, which contains none of either. Other proponents of keeping the fat in dairy products point out that you need fat to absorb the vitamin A and D in the milk, since they are fat-soluble vitamins.
We used to think that “fat” was a dirty word. But in fact, there are many healthy fats that can reduce high cholesterol, promote good cholesterol, and be a part of a heart-healthy diet. The secret is to focus on the right fats. “Good fats are monounsaturated fats such as olive oil, canola oil, nuts, and avocados, and there are also the polyunsaturated fats found in omega-3 fish, flaxseed, walnuts, and pumpkin seeds,” says Barbara Mendez, MS, RPh, a pharmacist and nutritional consultant in New York City. “These fats help reduce total cholesterol while raising the ‘good’ high-density lipoprotein, or HDL, cholesterol. This protects the heart from heart disease and also helps reduce total body inflammation. Additionally, these fats nourish healthy hair, skin, nails, and bones.”