And according to some powerful experiments by software engineer-turned-biohacker Dave Feldman, you can actually increase and decrease your cholesterol at will. It all depends on how much fat you eat — and, directly against mainstream dietary knowledge, the correlation is inverted. In other words, eating more fat will actually lower your cholesterol.
When it comes to cholesterol, not all types are created equal, and it is important to understand how lifestyle choices significantly impact cardiovascular health. High-density lipoprotein, or HDL, is known as the “healthy” or “good” type of cholesterol due to the fact that it scavenges and removes the “bad” type of cholesterol (low-density lipoprotein or LDL) known to clog arteries. A desirable HDL level is anything greater than 60 milligrams per deciliter (mg/dL).
More long-term studies are needed in order to determine whether or not it is the actual loss of weight or the diet and exercise that go along with it that causes the reduction in LDL levels. It is also possible that LDL cholesterol can eventually return to original levels, even when weight loss is maintained. Nonetheless, the prospect makes weight maintenance and good nutrition worthy goals to have.
Not all oils are created equal when it comes to your heart health. Olive oil and soybean oil are mainly unsaturated fat, which can lower LDL cholesterol and at the same time increase HDL cholesterol. In a study published in July 2015 in The Journal of Nutrition, researchers found that including olive oil in the diet decreased LDL concentrations in healthy young men.
I just moved and had to go to a new doctor. At my first annual exam and lipid panel, she called me back for a consult because she wanted to put me on a statin due to “high” ldl cholestoral levels. I am female, 54, height 5’4” and weigh 130 lbs. My ldl was 123 – my triglycerides were 58. My hdl was 68. I had basically the same lipid panel 2 years ago at my last annual exam (before moving) and my doc there was not concerned other than suggesting I start a CoQ10 and Omega 3 regimen. I don’t smoke, I exercise at least 45 minutes a day (running, cycling, golf, walking, etc.) – my major weakness is sweets. Plus no heart disease in immediate family (both parents still alive at 79 & 80 – no history of stroke, etc.)
Can my HDL be too high? It is well known that not all cholesterol is bad for you. Of HDL and LDL cholesterol, HDL packs some great benefits. This MNT Knowledge Center article examines when high HDL cholesterol is good, and whether higher is always better? Learn how to find the right balance along with some healthful ways to achieve high HDL. Read now
Sugar and spice and everything nice… except for the fact that recent data has shown that added sugar is not so nice for our cardiovascular health or waistlines. In fact, a study published in Circulation found that people with the highest consumption of added sugars show significantly lower HDL levels. To cut back on your added sugar intake and increase HDL levels, consider replacing sugar with dates when you’re making baked goods like homemade granola bars, cookies, and cakes. It’s one way to slice total added sugars in half and will also give your sweet treat extra fiber, vitamins, and minerals.
Avoid trans-fatty acids. These heart-damaging fats can reduce HDL (“good”) cholesterol levels and raise levels of LDL (“bad”) cholesterol. The tip-off that trans-fatty acids are present in foods is the listing of “partially hydrogenated oil” on a food’s ingredient list. Trans-fats are found in many brands of margarine and in most heavily processed foods, as well as in snack foods such as chips, crackers and cookies, and in the oils used to cook fast-food French fries, doughnuts and movie popcorn.
Trans fatty acids are likely present in many of your favorite prepared foods— anything in which the nutrition label reads "partially hydrogenated vegetable oils" — so eliminating them from the diet is not a trivial task. But trans fatty acids not only increase LDL cholesterol levels, but they also reduce HDL cholesterol levels. Removing them from your diet will almost certainly result in a measurable increase in HDL levels.
How does that song go? "Beans, beans, they're good for your heart"? Well...those lyrics get it right! Beans are packed with cholesterol-busting soluble fiber, but that's not their only benefit. Beans are high in protein, which makes them a heart-healthy replacement for some animal protein sources, such as meat. For the biggest cholesterol-lowering benefits, add beans to chili, tacos and burritos (either in place of or in addition to meat). They're also great in soups and salads.
Fiber is your friend when cholesterol is the enemy, so reach for foods that are full of soluble fiber. Just be aware that fiber comes in different forms, with one called soluble fiber and the other known as insoluble fiber. While both are good for your heart, it’s soluble fiber that’s great for your cholesterol. In addition to making you feel full, soluble fiber can actually reduce the amount of cholesterol your body absorbs. According to the Mayo Clinic, eating at least five to 10 grams of soluble fiber each day can lower both your LDL and total cholesterol levels. So better fill up your kitchen, along your body, with fiber-filled foods.
In humans, diets high in saturated fat and cholesterol raise HDL-cholesterol (HDL-C) levels. To explore the mechanism, we have devised a mouse model that mimics the human situation. In this model, HuAITg and control mice were studied on low fat (9% cal)-low cholesterol (57 mg/1,000 kcal) (chow) and high fat (41% cal)-high cholesterol (437 mg/1,000 kcal) (milk-fat based) diets. The mice responded to increased dietary fat by increasing both HDL-C and apo A-I levels, with a greater increase in HDL-C levels. This was compatible with an increase in HDL size observed by nondenaturing gradient gel electrophoresis. Turnover studies with doubly labeled HDL showed that dietary fat both increase the transport rate (TR) and decreased the fractional catabolic rate of HDL cholesterol ester (CE) and apo A-I, with the largest effect on HDL CE TR. The latter suggested that dietary fat increases reverse cholesterol transport through the HDL pathway, perhaps as an adaptation to the metabolic load of a high fat diet. The increase in apo A-I TR by dietary fat was confirmed by experiments showing increased apo A-I secretion from primary hepatocytes isolated from animals on the high fat diet. The increased apo A-I production was not associated with any increase in hepatic or intestinal apo A-I mRNA, suggesting that the mechanism of the dietary fat effect was posttranscriptional, involving either increased translatability of the apo A-I mRNA or less intracellular apo A-I degradation. The dietary fat-induced decrease in HDL CE and apo A-I fractional catabolic rate may have been caused by the increase in HDL particle size, as was suggested by our previous studies in humans. In summary, a mouse model has been developed and experiments performed to better understand the paradoxical HDL-raising effect of a high fat diet.
Besides putting your heart health at risk, sugar is also known to be one of the most significant contributors to metabolic syndrome. In fact, the recent 2015 Dietary Guidelines labeled sugar as a “nutrient of concern” and voiced recommendations for added sugars to not exceed greater than 10% of total daily calories. So, if your goal is to nip sugar in the bud and increase your HDL cholesterol levels, start by evaluating your libations.
For women after menopause, a study published in August 2016 in the journal Diabetes & Metabolism found that high intensity interval training (on a bicycle) led to better HDL cholesterol levels as well as significant weight loss. And a study published in May 2016 in the journal Applied Physiology, Nutrition, and Metabolism found that obese men who engaged in aerobic interval training (running on a treadmill) or resistance training (with weights) just three days a week for 12 weeks had significantly increased HDL cholesterol when compared with obese men who did no training.
Controlling your weight is an important part of getting to healthy cholesterol levels, so it’s crucial to know your portion sizes if you're trying to lower cholesterol. A portion of starchy carbohydrate, like potato or pasta, should be only about half the size of a baseball. A heart-healthy portion of meat should be about the size of a deck of playing cards, or about three ounces.
Because increasing HDL levels is thought to be such a beneficial thing, and because there is no easy or reliable way to do so, developing drugs that substantially raise HDL levels has become a major goal for several pharmaceutical companies. And indeed, several of these drugs have been developed, and have led to clinical trials to demonstrate their safety and efficacy.
Many people don't like to hear it, but regular aerobic exercise (any exercise, such as walking, jogging or bike riding, that raises your heart rate for 20 to 30 minutes at a time) may be the most effective way to increase HDL levels. Recent evidence suggests that the duration of exercise, rather than the intensity, is the more important factor in raising HDL cholesterol. But any aerobic exercise helps.
A: Before I answer that question, why bother to increase HDL cholesterol at all? Many studies have found that people with low levels of HDL are at increased risk for heart attacks, strokes, and other complications of arteries diseased by atherosclerosis: that's why we call HDL the "good" cholesterol. Given that, you'd think that raising HDL levels would reduce a person's risk for atherosclerosis. Unfortunately, despite a lot of research, we don't yet know if that's true, nor how best to raise HDL levels.
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HDL particles are heterogeneous. They can be classified as a larger, less dense HDL2 or a smaller, denser HDL3.  Normally, most of the plasma HDL is found in HDL3.  To add to the complexity of HDL classification, HDL is composed of 4 apolipoproteins per particle. HDL may be composed of apo A-I and apo A-II or of apo A-I alone. HDL2 is usually made up only of apo A-I, while HDL3 contains a combination of apo A-I and apo A-II. HDL particles that are less dense than HDL2 are rich in apo E.