Oxalic acid in green smoothies? Kidney stones due to green smoothies? Tooth damage and poisoning, also by green smoothies? The gossiping kitchen bubbling around the green fitmakers. Are green smoothies now slim, beautiful and healthy? Or do they make you sick? We clarify and show that none of the rumors has hand and foot. Green smoothies can be cooked in such a way that they not only nourish, but actually heal, dissolve kidney stones, prevent tooth damage and promote the body’s detoxification.
Green smoothies: kidney stones by oxalic acid and other rumors
Green smoothies are spreading rapidly around the globe and meanwhile there is hardly anyone who has never heard of the delicious green drinks.
Green smoothies are mixed drinks of water, fruits and green leaf vegetables, with fruits and green leaf vegetables at least in a ratio of 1: 1.
Most people love green smoothies because they can have great health effects. Often, after a few weeks, you feel much more powerful and fitter – both physically and mentally, and so many ailments vanish.
Now, however, rumors are being put into circulation, which would make us believe a lot, among others, that green smoothies contain oxalic acid and lead to kidney stones.
5 rumors about green smoothies – nothing but hot air
Rumor No. 1: Green smoothies contain oxalic acid and cause kidney stones
The rumor that green smoothies could cause kidney stones is without a comprehensible foundation. It is most probably due to the fact that some green foliage contains abundant oxalic acid, and at the same time many renal stones consist of the calcium salt of oxalic acid (calcium oxalate).
But this parallel does not mean that the presence of oxalic acid alone would automatically lead to kidney stones – which is well known in general.
Kidney stones are formed only when many conditions are fulfilled at the same time. These include, inter alia, the following points:
- Too little water is drunk. This increases the risk that salts in the urine crystallize out and can no longer be kept in solution. Kidney stones form.
- Too few foods rich in magnesium and potassium are eaten. Both minerals inhibit kidney stone formation.
- Too much salt is consumed. Sodium from cooking salt may combine with oxalic acid to form sodium oxalate.
- There is a dysbiosis (intestinal flora disorder). Certain darmbacteria are specialized in the degradation of oxalic acid.
- There is a latent hyperacidity and the urine is usually strongly sour. The more acid the urine, the greater the risk that oxalic acid may become kidney stones.
Consider now the characteristics of the green smoothies as well as the guidelines of a healthy diet and decide for yourself whether the regular consumption of green smoothies is a kidney drive or rather not:
- In the context of a healthy diet, care is always taken to drink enough water (about 30 ml per kilogram of body weight).
- Already by this measure, the risk of kidney stone formation decreases rapidly. Green smoothies also contain a lot of water and contribute to the liquid supply.
- Green smoothies are prepared from magnesium- and potassium-rich fruits and vegetables and therefore prevent kidney stone formation.
- Green smoothies are free of saline.
- Green smoothies promote the healthy intestinal flora and a healthy intestinal environment.
- Green smoothies are highly alkaline due to the green leafy vegetables and ensure that the urine is not too sour.
Rumor No. 2: Green smoothies harm the teeth
Green smoothies do not harm the teeth, of course. Finally, one does not suck the dear long day at the green smoothie. Then the smoothie would actually be a tooth-foe – just like this would be sugared soft drinks and juices, which are basically no human warning.
However, green smoothies are consumed one or two times a day, so that, if fruits are present, the teeth only come into contact with fruit acids and the sugary sugars on these occasions, a few minutes a day.
If you already have problems with the teeth, you can use the green smoothies to make them fruit-free or to use low-acid fruit, and in any case you should consider the use of mature fruit because they are automatically acidic.
In addition, when sensitive teeth are consumed after a green smoothie has been consumed, just as after eating any other meal, the mouth is washed with water or a xylitol rinse.
Since green smoothies are rich in vital substances, basic minerals and trace elements, and they can also contain anti-inflammatory antioxidants as well as antibacterial herbs, green smoothies – properly prepared – virtually counteract caries and periodontal disease.
Rumor No. 3: Green smoothies are poisonous
Green leaf vegetables are the cause of most food poisoning, one can read in so many anti-green Smoothie-treatment.
But this is a mistake. The most frequent food poisoning in the industrialized countries is still the salmonellosis as well as infections with the Campylobacter exciter – due to the consumption of raw or incorrectly stored animal products (egg dishes, poultry meat, beef etc.). In this context, almost every trace of green leafy vegetables is missing.
And anyone who now fears that he could suffer a lethal EHEC infection by sprouts – which can occasionally also be a component of smoothie recipes – is also in error.
Because the EHEC infection, which in 2011 had claimed several thousand patients and 50 deaths, was only officially the result of allegedly burdened buckwheat shoots from Egypt.
In reality, the current food crisis was never elucidated. The shoots were most likely merely prompted as a cause. In fact, an EHEC virus could not be found in about one thousand shoots of the small bio-shoot plant in the Bienenbüttel region of Lower Saxony.
Are secondary plant crops toxic?
Other secondary “toxic” ingredients in green smoothies are listed as secondary crops such as lecithins, which are referred to as “natural pesticides”, in order to create fears with the specific choice of words.
Partially these “bad” substances belonged to the same category as Strychnine, it states in there amusing opinion to the dangerousness of the green smoothies.
Alkaloids are called the category. And, in fact, there are representatives here, like Strychnine, who are already poisonous in tiny quantities.
Rumor No. 4: Green smoothies harm the thyroid gland
Of little, green smoothies are further removed than to harm the thyroid gland.
At the very least, an “overweight” source – who is known for professionally criticizing everything that is almost healthy and attractive – reports “goitrogenous substances” in green smoothies.
This accusation is similar to the hair as the oxalic acid-kidney-stone story.
Goitrogenic substances or simply goitrogenes are substances which either block the iodine intake or inhibit the conversion of the iodine from the food into the form of an iodine which can be used by the organism.
The result would be in both cases an iodine deficiency and thus a thyroid function.
Goitrogens are particularly found in the following foods:
In Onions, Pearl Millet, Cassava (Maniok), in the red cuticles of peanuts, soybeans and walnuts.
Which of these foods do you give in your green smoothie? Exactly, none of them.
And even if you did, it would not be problematic, since all these foods will only affect the thyroid gland when animals (in animal experiments) or people (in poor countries) live almost exclusively from one of these foods.
Rats, for example, developed thyroid problems after feeding them exclusively for walnuts for 75 days.
In Sudan, an iodine deficiency is widespread, as the people there absorb 74 per cent of their total calorie intake over the Pearl millet, so they eat hardly anything other than Pearl millet.
And for people who were raised with soybean milk in their infants, who were given soy every day, there is an increased risk of thyroid disease in the adult age.
Will you, however, experience a thyroid disease when you eat a handful of walnuts from time to time? If you take a Sojaburger twice a week? If you eat half an onion daily in salad and vegetables? No, of course not!
Rumor No. 5: Green smoothies are made of garden waste, foliage and weeds
We do not have to wait a long time for this rumor. The creator of this has simply a problem with the definition of some smoothie ingredients.
One calls wild plants a weed, the other knows how to appreciate them as a high-quality and healing food.
Tree leaves should be inedible, it is said in many places and they were used only in times of need and war. They had to be finely ground to be able to use them at all as food.
Well, grain is also used only finely ground, since the pure grains can not be digested untreated.
If edible tree leaves are chewed well, then we can very well benefit from their ingredients and not least their fiber. For it is already known that not only is digestible for our health important, but also indigestible (fiber) and that low dietary diets can lead to different diseases – especially the digestive system.
However, tree leaves must not be a basic food as little as carrot green or radish leaves. All these ingredients are used in the smoothie to a fraction of only a few grams. To demonize it is like shooting cannons on sparrows.
Tips for a Healthy Green Smoothie
- However, you should be careful not to make your green smoothies blind with any x ingredients.
Just like baking, noodle cooking or steak, it is also necessary to adhere to certain rules during the smoothie preparation.
The main smoothie rules are the following:Stick to the original recipe (water, ripe fruit, green leafy vegetables – otherwise nothing).
- Additional ingredients (fats / oils, nuts, dried fruits, sweeteners, etc.) are not provided and should be used only sparingly, if at all.
- Stay with one or two species of fruit. From green leafy vegetables, however, you can mix different kinds.
- Root and tubers – such as strong vegetables – are included as vegetables on the plate, but not in the green smoothie!
- Green smoothies are prepared in the high-performance mixer in less than a minute. There is no reason to run the mixer longer. And thus there is also no danger that vital substances are destroyed during mixing.
- Green smoothies are not really for drinking, but more to be chewed, stuffed and then swallowed.