We used to think that fresh juices are the most useful.
Recently, however, scientists and doctors talking about the fact that these juices also pose a considerable health hazard, informs Rus.Media.
Damage of fresh juices
In 1991, the Committee on nutrition of the American Academy of Pediatrics (AAP) has announced that it is contained in fresh juices sorbitol, and fructose and glucose can disrupt intestinal absorption of nutrients. This is especially dangerous, according to doctors, to children, as a lack of important minerals can even lead to a delay in development.
According to the American endocrinologist Robert Lustig, whole fruits are much better fresh juices because they have fiber, which slows the absorption of carbohydrates and prevents sharp increase in blood glucose levels.
Susan Jebb from Oxford University claims that in any juice though fresh squeezed, though teabags, lots of sugar, which is almost instantly absorbed into the bloodstream, causing further release of insulin the pancreas and draining.
In 2013, a team of Japanese, British, American and Singaporean scientists under the leadership of V. Murakami summarized the results of three large-scale studies examining the relationship between consumption of fruits and fruit juices and the development of type II diabetes. “The consumption of large quantities of fresh fruit, especially blueberries, grapes and apples, is significantly associated with a lower risk of developing diabetes, whereas greater consumption of fruit juice is associated with a high risk of diabetes” — to such conclusion they came. Researchers believe that this is due not only to the absence of the juice of fiber, which keeps the glucose in the blood to rise dramatically, but the decrease in the content in the juices of other useful substances, which are present in the fruit. For example, the substance resveratrol contained in the skins of grapes and is considered a potential “cure for old age”, in grape juice is present in minor quantities. Same with the polyphenols contained in citrus fruits and possess antioxidant properties – they are present in the connective fibers, but not in the juice.
What juices are the most harmful?
It contains many useful elements: calcium, manganese, Nickel, zinc, copper, iron, and vitamins. Pectin, which is included with Apple juice regulates the gastro-intestinal tract. However, the Apple juice irritates the mucous membranes and is contraindicated in such ailments as ulcers, gastritis and pancreatitis.
Because grape juice has a high potassium content and sugar, it is recommended for those who suffer from cardiovascular diseases or mental fatigue. Grape juice actively used as a diuretic, bactericidal and expectorant. But at the same time, should avoid it those who suffer from obesity, diabetes, peptic ulcer or duodenum ulcer.
In juices from citrus Vyatich, contains large amounts of vitamins, potassium, folic acid. This biologically active components that strengthen blood vessels, reduce the risk of hypertension, atherosclerosis and even cancer. However, citrus murderously act on the mucosa. If you have gastritis, pancreatitis, duodenal ulcer, something about these juices should be forgotten.
You should also be careful with grapefruit juice. In particular, this is evidenced by the English biochemist of Russian origin Zhores Medvedev. The fact that it contains a substance naringin, which increases or reduces the activity of many drugs. Therefore, carefully read the instructions for the medication, and if necessary, opt out for the time of their admission from drinking grapefruit juice.
This juice increases hemoglobin and regulates the activity of the gastrointestinal tract, a diuretic, choleretic, anti-inflammatory and antiseptic. But it contains many acids that irritate the stomach and erode tooth enamel. And it is contraindicated in diseases such as ulcer, gastritis and pancreatitis. In addition, when taking pomegranate juice must be diluted with water, otherwise it will be too concentrated.
From many uses: it makes the nervous system, stimulates the blood, improves functioning of the intestines. But fresh beetroot juice contains harmful compounds, which are destroyed on contact with air. So before drinking you need at least 2-3 hours to defend the juice in open jars in the fridge. Abuse of beet juice can cause dizziness, palpitations, nausea, vomiting, General malaise. Therefore it is recommended to start with one tablespoon a day, spreading the juice with boiled water or broth hips. It is not recommended to drink beet juice for those who suffer from stomach ulcers, diseases of duodenum and kidneys.
In carrot juice a lot of vitamins, beta-carotene, potassium, calcium, cobalt and other minerals. It is considered good for vision and skin, and also boosts immunity. However, an excess of beta-carotene causes strain on the liver. In addition, absolutely can not drink carrot juice during exacerbation of peptic ulcer disease and diarrhea.
How to properly use fresh juices?
To avoid unwanted effects, experts advise, before you enter in your diet fresh juices, you should consult a doctor. Drink fresh juices immediately after cooking (except beet), but not less than 30-40 minutes before a meal. Can’t drink acidic juices on an empty stomach because they irritate the stomach. And better to start with small doses – from a few tablespoons to half a Cup of.