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10 Proven Health Benefits of Blueberries
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JennyL
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JennyL
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Good to know all this. I love blueberries, have some every day with my breakfast, but haven't seen them do any of the above. After about 5 years of eating them, I would love to know they're working! Perhaps one needs to have a lot more than a small handful daily, in which case they will cost a lot more? Oh well.
Margarita_k
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Margarita_k
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Hello everyone,
Don't hesitate to check out this new recipe of gluten-free blueberry muffins :
Gluten-free chocolate&blueberry muffins
And let us know if you have other recipes of blueberry desserts to share with us
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Thank you for the very informative message about Blueberries. i have them every single day with my breakfast. i do have hypertension, fairly well controlled on Ramipril and hope that daily dose of blueberryhelps to keep my blood pressure under control too.
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Margarita_k
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Margarita_k
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Last activity on 07/10/2020 at 11:39
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Blueberries are sweet, nutritious and wildly popular. Often labelled a “superfood,” they are low in calories and incredibly good for you. They are so tasty and convenient that many people consider them to be their favorite fruit.
Here are 10 health benefits of blueberries that are supported by research.
1. Blueberries are Low in Calories, But High in Nutrients
The blueberry is a flowering shrub that produces berries that are colored blue to purple, also known as blueberries. It is strongly related to similar shrubs, such as those that produce cranberries and huckleberries.
Blueberries are among the most nutrient dense berries. A 148 grams serving of blueberries contains:
Fiber: 4 grams.
Vitamin C: 24% of the RDA.
Vitamin K: 36% of the RDA.
Manganese: 25% of the RDA.
Then it contains small amounts of various other nutrients.
They are also about 85% water, and an entire cup contains only 84 calories, with 15 grams of carbohydrates. Calorie for calorie, this makes them an excellent source of several important nutrients.
2. Blueberries are the King of Antioxidant Foods
Antioxidants are important. They protect our bodies from damage by free radicals, unstable molecules that can damage cellular structures and contribute to aging and diseases like cancer.
Blueberries are believed to contain the highest antioxidant capacity of ALL commonly consumed fruits and vegetables. The main antioxidant compounds in blueberries belong to a large family of polyphenols, called flavonoids. One group of flavonoids in particular, anthocyanins, is thought to be responsible for much of the beneficial health effects. They have been shown to directly increase antioxidant levels inside the body.
3. Blueberries Reduce DNA Damage, Which May Help Protect Against Ageing and Cancer
Oxidative DNA damage is part of everyday life. It is said to occur tens of thousands of times per day, in every single cell in the body. DNA damage is part of the reason we grow older, and it also plays an important role in the development of diseases like cancer.
Because blueberries are high in antioxidants, they can help neutralize some of the free radicals that cause damage to our DNA. In one 4-week study, 168 participants were instructed to drink 1 liter of a mixture of blueberry and apple juice, every day. At the end of the study, oxidative DNA damage due to free radicals was reduced by 20%. These findings have also been supported by smaller studies using either fresh or powdered blueberries.
4. Blueberries Protect Cholesterol in The Blood From Becoming Damaged
Oxidative damage is not limited to our cells and DNA. It is also problematic when our circulating LDL lipoproteins (the “bad” cholesterol) are oxidized. In fact, oxidation of LDL is a crucial step in the heart disease process.
Fortunately for us, the antioxidants in blueberries are strongly linked to reduced levels of oxidized LDL. A daily 50 gram serving of blueberries lowered LDL oxidation by 27% in obese participants, after a period of eight weeks. Another study showed that 75 grams of blueberries with a main meal significantly reduced the oxidation of LDL lipoproteins.
5. Blueberries May Lower Blood Pressure
Blueberries appear to have significant benefits for people with high blood pressure, a major risk factor for some of the world’s leading killers.
In one study, obese individuals at a high risk for heart disease noted a 4-6% reduction in blood pressure, after consuming 50 grams of blueberries per day, for eight weeks.
Other studies have found similar effects, especially when looking at post-menopausal women. Given that high blood pressure is one of the leading drivers of heart attacks and strokes, the implications of this are potentially massive.
6. Blueberries May Help Prevent Heart Disease
Again, eating blueberries may lower blood pressure and oxidized LDL. However, it’s important to realize that these are risk factors, not actual diseases. What we really want to know is whether blueberries help prevent hard end points like heart attacks, which are the world’s biggest killer.
In a 2013 study on 93,600 nurses, eating plenty of anthocyanins (the main antioxidants in blueberries) was linked to a 32% lower risk of heart attacks. This was an observational study, so it can not prove that the blueberries caused the reduction in risk, but it seems likely given the known beneficial effects on risk factors.
7. Blueberries Can Help Maintain Brain Function and Improve Memory
Oxidative stress can accelerate the brain’s aging process, having negative effects on brain function. According to animal studies, the antioxidants in blueberries tend to accumulate in areas of the brain that are essential for intelligence. They appear to directly interact with aging neurons, leading to improvements in cell signalling.
Human studies have also shown promising results. In one of these studies, 9 elderly participants with mild cognitive impairment consumed blueberry juice every day. After 12 weeks, they had seen improvements in several markers of brain function. A six year study of 16,010 elderly participants found that blueberries and strawberries were linked to delays in cognitive aging by up to 2.5 years.
8. Anthocyanins in Blueberries Can Have Anti-Diabetic Effects
Blueberries are moderate in sugar when compared to other fruits. One cup contains 15 grams, which is equivalent to a small apple or large orange. However, the bioactive compounds in blueberries appear to outweigh any negative impact of the sugar when it comes to blood sugar control.
Research suggests that anthocyanins in blueberries can have beneficial effects on insulin sensitivity and glucose metabolism. These anti-diabetic effects have been shown with both blueberry juice and extract. In a study of 32 obese subjects with insulin resistance, a blueberry smoothie caused major improvements in insulin sensitivity. Improved insulin sensitivity should lower the risk of metabolic syndrome and type 2 diabetes, which are currently some of the world’s biggest health problems.
9. Substances in Them May Help Fight Urinary Tract Infections
Urinary tract infections are a common problem in women. It is well known that cranberry juice can help prevent these types of infections. Blueberries are highly related to cranberries, and contain many of the same active substances as cranberry juice. These substances are called anti-adhesives, and help prevent bacteria like E. coli from binding to the wall of the bladder. Blueberries haven’t been studied much for this purpose, but chances are that they have similar effects as cranberries.
10. Blueberries May Help Reduce Muscle Damage After Strenuous Exercise
Strenuous exercise can lead to muscle soreness and fatigue. This is driven, in part, by local inflammation and oxidative stress in the muscle tissue. Blueberry supplementation may reduce the damage that occurs at the molecular level, minimizing soreness and reduction in muscle performance. In a small study of 10 female athletes, blueberries accelerated muscle recovery after strenuous leg exercises.
Source: AuthorityNutrition.com