Avocado
The avocado is a rather unique type of fruit.
Most fruit consists primarily of carbohydrate, while avocado is high in healthy fats.
Numerous studies show that it has powerful beneficial effects on health.
Here are 12 health benefits of avocado, that are supported by scientific research.
1. Avocado is Incredibly Nutritious
What we refer to as "avocado" is the fruit of the avocado tree, called Persea americana (1).
This fruit is prized for its high nutrient value and is added to all sorts of dishes due to its good flavor and rich texture. It is the main ingredient in guacamole.
These days, the avocado has become an incredibly popular food among health conscious individuals. It is often referred to as a superfood... which is not surprising given its health properties (2).
There are many kinds of avocados, and the shape (from pear-shaped to round) and color (from green to black) can vary between them. They can also weigh anywhere from 8 ounces (220 grams) to 3 pounds (1.4 kg).
The most popular type is called Hass avocado.
It is often called "alligator pear," which is very descriptive because it tends to be shaped like a pear and have green, bumpy skin... like an alligator.
The yellow-green flesh inside the fruit is eaten, but the skin and seed are discarded.
Avocados are very nutritious and contain a wide variety of nutrients, including 20 different vitamins and minerals.
Here are some of the most abundant nutrients, in a single 3.5 ounce (100 gram) serving (3):
Vitamin K: 26% of the RDA.
Folate: 20% of the RDA.
Vitamin C: 17% of the RDA.
Potassium: 14% of the RDA.
Vitamin B5: 14% of the RDA.
Vitamin B6: 13% of the RDA.
Vitamin E: 10% of the RDA.
Then it contains small amounts of Magnesium, Manganese, Copper, Iron, Zinc, Phosphorous, Vitamin A, B1 (Thiamine), B2 (Riboflavin) and B3 (Niacin).
This is coming with 160 calories, 2 grams of protein and 15 grams of healthy fats. Although it contains 9 grams of carbs, 7 of those are fiber so there are only 2 "net" carbs, making this a low-carb friendly plant food.
Avocados do not contain any cholesterol or sodium, and are low in saturated fat. I personally don't think that matters, but this is one of the reasons they are favored by many "old school" experts who still believe these things are inherently harmful.
Avocado is a green, pear-shaped fruit often called an “alligator pear.” It is loaded with healthy fats, fiber and various important nutrients.
2. They Contain More Potassium Than Bananas
Potassium is a nutrient that most people aren't getting enough of (4).
This nutrient helps maintain electrical gradients in the body's cells and serves various important functions.
Avocados are actually very high in potassium... with a 100 gram (3.5 ounce) serving containing 14% of the RDA, compared to 10% in bananas, which are a typical high potassium food (5).
Several studies show that having a high potassium intake is linked to reduced blood pressure, a major risk factor for heart attacks, strokes and kidney failure (6).
Potassium is an important mineral that most people don't get enough of. Avocados are very high in potassium, which should support healthy blood pressure levels.
3. Avocado is Loaded With Heart-Healthy Monounsaturated Fatty Acids
Again, avocado is a high fat food.
In fact, 77% of the calories in it are from fat, making it one of the fattiest plant foods in existence.
But they don't just contain any fat... the majority of the fat in avocado is oleic acid.
This is a monounsaturated fatty acid that is also the major component in olive oil and believed to be responsible for some of its beneficial effects.
Oleic acid has been linked to reduced inflammation and been shown to have beneficial effects on genes linked to cancer (7, 8, 9, 10).
The fats in avocado are also pretty resistant to heat-induced oxidation, making avocado oil a healthy and safe choice for cooking.
Avocados and avocado oil are high in monounsaturated oleic acid, a "heart healthy" fatty acid that is believed to be one of the main reasons for the health benefits of olive oil.
4. Avocados Are Loaded With Fiber
Fiber is another nutrient found in relatively large amounts in avocado.
Fiber is indigestible plant matter that can contribute to weight loss, reduce blood sugar spikes and is strongly linked to a lower risk of many diseases (11, 12, 13).
A distinction is often made between soluble and insoluble fiber.
Soluble fiber is known to be able to feed the friendly gut bacteria in the intestine, which are very important for the optimal function of our bodies (14).
A 100 gram (3.5 ounce) serving of avocado contains 7 grams of fiber, which is 27% of the recommended daily amount.
About 25% of the fiber in avocado is soluble, while 75% is insoluble (15).
Avocados tend to be high in fiber, about 7% by weight, which is very high compared to most other foods. Fiber can have various important benefits for weight loss and metabolic health.
5. Eating Avocados Can Lower Cholesterol and Triglyceride Levels
Heart disease is the most common cause of death in the world (16).
It is known that several blood markers are linked to an increased risk.
This includes cholesterol, triglycerides, inflammatory markers, blood pressure and various others.
The effects of avocado on some of these risk factors has been studied in 8 human controlled trials.
These are studies where people are split into groups... one group is instructed to eat avocados, while the other is not. Then researchers see what happens to their blood markers over time.
These studies have shown that avocados can (17, 18, 19, 20, 21, 22, 23):
Reduce total cholesterol levels significantly.
Reduce blood triglycerides by up to 20%.
Lower LDL cholesterol by up to 22%.
Increase HDL (the "good") cholesterol by up to 11%.
One of the studies showed that including avocado in a low-fat vegetarian diet led to improvements in the cholesterol profile (24).
Unfortunately, all of the human studies were small (13-37 subjects) and short-term (1-4 weeks), but the results were impressive nonetheless.
Numerous studies have shown that eating avocado can improve heart disease risk factors like Total, LDL and HDL cholesterol, as well as blood triglycerides.
6. People Who Eat Avocados Tend to be Healthier
One study looked at the dietary habits and health of people who eat avocados.
They analyzed data from 17,567 participants in the NHANES survey in the U.S.
Avocado consumers were found to be much healthier than people who didn't eat avocados.
They had a much higher nutrient intake and were half as likely to have metabolic syndrome, a cluster of symptoms that are a major risk factor for heart disease and diabetes (25).
People who ate avocados regularly also weighed less, had a lower BMI and significantly less belly fat. They also had more HDL (the "good") cholesterol.
However... correlation does not imply causation and there is no guarantee that the avocados caused these people to be in better health.
Therefore I don't think this particular study carries much weight.
One dietary survey found that people who ate avocados had a much higher nutrient intake and had a lower risk of metabolic syndrome.
7. The Fat in Them Can Help You Absorb Nutrients From Plant Foods
When it comes to nutrients, the total amount of them is not the only thing that matters.
We also need to be able to absorb them... move them from the digestive tract and into the body, where they can be used.
Some nutrients are "fat soluble," meaning that they need to be combined with fat in order to be utilized.
This includes vitamins A, D, E and K... along with antioxidants like carotenoids.
One study showed that adding avocado or avocado oil to either salad or salsa can increase antioxidant absorption by 2.6 to 15-fold (26).
So... not only is avocado highly nutritious, it can dramatically increase the nutrient value of other plant foods that you are eating.
This is an excellent reason to always include a healthy fat source when you eat veggies. Without it, a lot of the beneficial plant nutrients will go to waste.
Studies have shown that eating avocado or avocado oil with veggies can dramatically increase the amount of antioxidants you take in.
8. Avocados Are Loaded With Powerful Antioxidants That Can Protect The Eyes
Not only do avocados increase antioxidant absorption from other foods, they are also high in antioxidants themselves.
This includes nutrients called Lutein and Zeaxanthin, which are incredibly important for eye health (27, 28).
Studies show that these nutrients are linked to a drastically reduced risk of cataracts and macular degeneration, which are common in the elderly (29, 30).
Therefore, eating avocados should have benefits for eye health over the long term.
Avocados are high in antioxidants, including Lutein and Zeaxanthin. These nutrients are very important for eye health and lower the risk of macular degeneration and cataracts.
9. Avocado May Help Prevent Cancer
There is limited evidence that avocado may be beneficial in preventing cancer.
One study showed that it may help reduce side effects of chemotherapy in human lymphocytes (31).
Avocado extract has also been shown to inhibit the growth of prostate cancer cells (32).
However, keep in mind that these studies were done in isolated cells and don't really prove anything about what happens in a living, breathing human.
Some studies in isolated cells have shown that nutrients in avocados may have benefits in preventing prostate cancer, and lowering side effects of chemotherapy in some cells.
10. Avocado Extract May Help Relieve Symptoms of Arthritis
Arthritis is a common problem in Western countries. There are many types of arthritis, and these are often chronic problems that people have for the rest of their lives.
Multiple studies have shown that extracts from avocado and soybean oil, called Avocado and Soybean unsaponifiables, can reduce symptoms of arthritis of the bones, called osteoarthritis (33, 34).
Whether avocados themselves can have this effect, and not just the extract, remains to be seen.
Studies have shown that an extract from avocado and soybean oils can significantly reduce symptoms of osteoarthritis.
11. Eating Avocado May Help You Lose Weight
There is some evidence that avocados are a weight loss friendly food.
In one study, people were split into groups. One group was instructed to eat a meal that contained avocado, the other a similar meal without avocado.
Then they were asked a series of questions related to hunger and satiety.
The people eating the avocado felt 23% more satisfied and had a 28% lower desire to eat over the next 5 hours (35).
If this holds true in the long-term, then including avocados in your diet could help you naturally eat fewer calories and have an easier time sticking to a healthy diet.
Avocados are also high in fiber, and very low in carbs, two attributes that should also help promote weight loss, at least in the context of a healthy, real food based diet.
12. Avocado is Delicious and Easy to Incorporate in The Diet
Not only are avocados healthy, they're also incredibly delicious and go with all sorts of foods.
You can add them to salads and various sorts of recipes, or you can simply scoop them out with a spoon and eat them plain.
They have a creamy, rich, fatty texture and blend well with various other ingredients.
A notable mention is guacamole, which is arguably the most famous use of avocados. It includes avocado along with ingredients like salt, garlic, lime and a few others depending on the recipe.
An avocado often takes some time to ripen and it should feel slightly soft when ripe. The nutrients in avocado can oxidize soon after fleshing it, but if you add lemon juice then that shouldn't happen as quickly.
If you're serious about adding avocado to your diet, then I highly recommend that you watch this video about how to pick, prepare and eat avocados.
At the end of the day, avocados are an awesome food. They're loaded with nutrients, many of which are lacking in the modern diet.
They are weight loss friendly, heart healthy and... last but not least, taste incredible.
DETTAGLI
- Avocado $ 2.75 /Per Kg