Vitamin D is an extremely important macronutrient in our body because it regulates the calcium-phosphate balance. In addition, it allows for the absorption of these elements in our intestines and is responsible for proper bone mineralisation, playing a crucial role in bone health by supporting bone formation and maintenance. A deficiency in vitamin D can lead to conditions like osteomalacia, which is associated with bone pain and muscle weakness in adults. For this reason this vitamin should be present in our organism in an amount which is neither too little nor too much, and we should know that it is not easy to maintain its proper level. Calcium supplements are also important alongside vitamin D for maintaining bone health and preventing osteoporosis. However, it is worth trying, because it is associated with a whole bunch of benefits. It is also recommended to take a daily vitamin D supplement, especially during autumn and winter, to ensure adequate levels.
The right amount of vitamin D is responsible for the proper condition of bones, that they are strong and teeth are healthy. In addition, it ensures an efficient cardiovascular system, reduces the risk of cancer, and helps to maintain a slim figure. However, it is important to realise that both an excess and a deficiency of this vitamin can sometimes be tragic in its consequences, so it is always advisable to consult a doctor in the case of special supplementation.
Definition and Importance of Vitamin D
Vitamin D is a fat-soluble vitamin that plays a crucial role in maintaining strong bones, immune function, and overall health. Often referred to as the “sunshine vitamin,” it is produced in the skin in response to sunlight exposure. This essential nutrient helps the body absorb calcium and phosphorus, which are necessary for building and maintaining healthy bones. Without enough vitamin D, our bodies can’t absorb these minerals effectively, leading to a range of health problems. Deficiency in vitamin D can result in conditions such as osteoporosis, rickets, and an increased risk of infections. Ensuring you have enough vitamin D is vital for your overall well-being.
Role of Vitamin D in the Body
Vitamin D plays a vital role in the body, and its functions include:
- Regulating calcium and phosphorus levels in the blood: This is essential for maintaining healthy bones and teeth.
- Supporting immune function: Adequate vitamin D levels help reduce the risk of infections.
- Reducing the risk of osteoporosis and fractures: By ensuring proper bone mineralization, vitamin D helps maintain bone density and strength.
- Supporting muscle function: It helps reduce the risk of falls, particularly in older adults.
- Reducing the risk of certain diseases: Adequate vitamin D levels are associated with a lower risk of conditions such as diabetes, hypertension, and certain types of cancer.
Incorporating enough vitamin D into your daily routine, whether through sun exposure, diet, or supplements, is essential for maintaining overall health and preventing various health issues.
Severe vitamin D deficiency
Vitamin D, or rather its correct amount, is extremely important for every organism, therefore it is worth knowing what a deficiency of this substance is connected with. Typical symptoms for the lack of this macronutrient are first of all:
- bone and muscle pains,
- muscle weakness,
- diarrhoea,
- visual disturbances and deterioration of sight,
- insomnia,
- tastelessness and a burning sensation in the throat and mouth,
- loss of appetite,
- periodontal disease;
Adequate intake of this substance is particularly important for the development and functioning of the organism in infants, because in the case of deficiency they develop a head that is too flat at the back as a result of softening of the bones of the skull, and on the forehead there is a risk of protuberant tumours appearing. The deficiency is also responsible for the delayed fusion of the fontanel. Severe vitamin D deficiency has significant health implications, such as hypocalcemia and osteomalacia, which require appropriate treatment to prevent further complications.
In young children insufficient vitamin D can result in the development of rickets, while in adults it is a frequent cause of osteoporosis and bone softening. The lack of vitamin D increases the risk of obesity, cardiovascular diseases, diabetes, inflammatory diseases and conditions. In extreme cases it can even result in cancer.
Daily vitamin D supplement intake norm
Laboratory tests make it possible to check the level of vitamin D in the body by checking the serum concentration of the stable metabolite of this vitamin, namely 25(OH)D. For Central Europe, the norms are at the following levels:
- 0-50 nmol/l or 0-20 ng/ml indicates vitamin D deficiency,
- 50-75 nmol/l or 20-30 ng/ml indicate insufficient levels,
- 75-125 nmol/l or 30-50 ng/ml is an optimal concentration,
- 125-250 nmol/l or 50-100 ng/ml is a high concentration,
- greater than 250 nmol/l or greater than 100 ng/ml is a potentially toxic concentration.
On the basis of such test results, the vitamin supply should be determined individually for each person, considering how much vitamin D individuals need to maintain adequate health. However, the most commonly recommended dosage of vitamin D is 400 IU per day in children and 10000 IU per day in adults.
Dietary supplements play a crucial role in meeting vitamin D requirements, especially for at-risk groups who may not get enough from food and sunlight alone.
Which vitamin D is best for children?
Since vitamin D occurs naturally mainly in fatty fish, egg yolks, butter and full-fat dairy products, it is impossible to provide children with adequate amounts of vitamin D from food alone. Vitamin D supplementation is therefore necessary if we want to protect the young person from postural defects, weakening of bones and teeth, or deterioration of resistance to infections. In the case of children, the most important thing is the amount of vitamin D and the form in which it is administered. Healthy infants until the age of 6 months should take it in the amount of 400 IU daily, premature babies from 400 to 800 IU. After the first year of life the dose increases to about 600 - 1000 IU, but in the case of toddlers with overweight even 2000 IU may be needed.
Vitamin D supplements are crucial in ensuring children receive the appropriate amount of vitamin D.
In turn, the most convenient forms of vitamin D, which ensure that the child receives the appropriate amount of the product, are mainly twist-off capsules and packaging with a pump.
Occurrence of vitamin D
Because the benefits of taking the right amount of vitamin D are many, it is important to know where to find it. Individuals with dark skin, such as those of African, African-Caribbean, or South Asian backgrounds, face a higher risk of vitamin D deficiency due to lower UV radiation absorption, which can impact their overall health, including bone health. It has many important functions in our bodies, although we need to be very careful not to overdose it. To do this, it is worth consulting a specialist, which may be a doctor or pharmacist. However, when it comes to foods in which we can find vitamin D in quite significant amounts, these are yeast, liver, egg yolks, but also fish products and fish oils. Dietary supplements are also an essential source of vitamin D intake, especially for individuals at risk of deficiency. Undoubtedly everyone will find among these products something suitable for their taste and conviction, and therefore will be able to provide an adequate amount of this substance, or rather macroelement, which is so important for our health.
Few people know this, but vitamin D is produced when we spend long enough in the sun. Even a twenty-minute walk in the sun is enough to produce the necessary amount of vitamin D for our body to function efficiently and healthily. Of course, it should come as no surprise that this accelerates the ageing process. Weakening of muscle strength and painful cramps or problems with walking are also typical symptoms of deficiency. If the vitamin is lacking during fetal life, there is a risk of schizophrenia or even autism. It is important to balance sun exposure to obtain sufficient vitamin D while minimizing the risk of skin cancer.
