Casein is the main protein in milk. Although unknown to many, it is found in dairy products such as: cheese, butter and even yoghurt.
For many years it has become known for its interesting nutritional values, but currently there are some warnings regarding its consumption.
This is so, above all, because some people show symptoms of allergies and intolerances which, if left unchecked, can lead to more serious health problems.
What is Casein?
- Caseins are milk proteins grouped into micelles.
- They make up 80% of the total protein in cow’s milk..
- The remaining 20% ​​is made up of whey protein, also known for its benefits for sports performance and muscle development.
It is also known by the name of “slow protein” because, Unlike whey, it is slowly digested and absorbed. In this way it exerts an anti-catabolic effect, that is, it prevents the muscle from degrading.
What are the benefits of casein?
casein it is one of the proteins high biological value They can help build and strengthen muscle mass. Some of its advantages are:
- Contributes to the regeneration of muscle fiberseven at night, to be of the slow absorption type.
- Its high calcium content strengthens the bone system and takes care of dental health.
- It has an anti-catabolic effect which prevents the loss of muscle thin during the day.
Side effects of casein
Casein is one of the supplements that is often they are recommended for those who are following an active exercise regimen.
However, it is convenient to analyze the possible side effectsespecially if you have a history of allergies or intolerances to any dairy product.
1. Increased mucus
It’s been a long time since then excessive consumption of milk is associated with an increase in mucus. However, there are no studies that allow 100% confirmation of this theory.
Again, some research they proved it this would occur in people who have some degree of intolerance to dairy products.
This is because by-products are released during the bacterial degradation of this protein cause the appearance of thick, sticky mucus adhering to the mucous membranes.
Due, the respiratory system is obstructed, preventing the transport of oxygen with total fluidity. For this reason, poor digestion of casein is associated with worsening symptoms of:
- Sinusitis.
- Rhinitis.
- Asthma.
- Pneumonia.
- Ear infection.
2. Kidney damage
When your kidneys are functioning smoothly, moderate consumption of casein usually doesn’t cause them any problems.
- However, In people predisposed to kidney damage, adding this protein to the diet has a negative impact.
According to a study published in the journal Kidney Internationalthis should be casein would affect the filtration system of the kidneyswhich would increase renal acidification.
Also, the problem is multiplied when, with a kidney problem, it continues to be part of the diet.
3. Allergies
various Education show it Casein is one of the most allergic milk proteins. Therefore, many milk-allergic people are allergic to casein and not all milk proteins.
Sometimes, the immune system identifies it as an antigen or harmful compound and releases histamine to neutralize it. Symptoms include:
- Nasal congestion.
- Rashes.
- Itchy eyes.
- Stomach pain and cramps.
- blisters.
4. Risk of childhood diabetes
The occurrence of this disease can be due to various factors, including environmental, dietary and genetic factors.
A study published in the journal Nutrition and diabetes suggests that, in children with a genetic predisposition, casein may increase the risk of type 1 diabetes.
This it would be due to the poor assimilation of this proteinwhich could affect the intestine, thus favoring the onset of the disease.
Therefore, if there is a story of diabetes In the family it may be advisable to reduce the consumption of cow’s milk or consult your doctor so that he can suggest the best alternatives.
Is casein dangerous?
After reading these side effects of casein, you may be wondering: is it harmful, then? Should I stop taking it?
It is true that this protein has various side effects, but it also has many advantages. This gives you calcium, which is essential for the bone system, among others.
Moreover, it is associated with immune function, so it is essential for defenses. For this reason, in principle, it is a more than recommended protein to be included in the diet (always in adequate quantities).
On the other hand, as you may have noticed, most of these contraindications occur in people with pre-existing disorders or genetic predisposition to certain diseases.
AS, it is advisable to be alert to these symptoms and, if you think this might be the case, see your doctor so that he can run some tests to confirm it and offer you some alternatives or recommendations.
Also, if you are an athlete and want to start taking casein supplements, It is advisable to consult your doctor beforehand. or with a nutritionist so that he can evaluate your specific case.
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