Vitamin D and weight loss: how sunlight affects our figure
Sometimes it seems as though a person is doing everything right – counting calories, exercising, and trying to get enough sleep – yet the weight comes off slowly or remains completely unchanged. In many such cases, it is worth checking your vitamin D levels. The link between ‘vitamin D and weight loss’ has long ceased to be merely theoretical. With a severe deficiency of this micronutrient, the metabolism does indeed slow down, and the body tries to accumulate fat tissue and avoid using existing reserves for energy production.
Vitamin D, when taken in the right amounts, has a beneficial effect on tissue sensitivity to insulin; after all, when this sensitivity is reduced, the body finds it harder to use glucose as an energy source, and any excess is more quickly stored as fat. Therefore, vitamin D is excellent for weight loss and, in this context, is regarded as a factor in metabolic support, rather than simply as an essential element for building and maintaining immunity.
For the best results, it is important to maintain a healthy balance
Experience shows that vitamin D3 is most commonly used for weight loss, as this form is absorbed more readily and is more effective at raising blood levels of 25(OH)D. Once related indicators have returned to normal, many people report a reduction in chronic fatigue and a decrease in sugar cravings—two key factors that directly hinder weight management.
The thing is, vitamin D doesn’t work on its own. To achieve the full effect, other vitamins and minerals are also important for weight loss, particularly B vitamins, vitamin C, magnesium and zinc. Magnesium plays a role in energy metabolism, whilst zinc influences hormone levels. Together, they help the body utilise fat more efficiently and support healthy fat metabolism.
Where can you get vitamin D?
There are only three sources of vitamin D for replenishing and maintaining the health of the human body. These are vitamin D-rich foods, sunlight, and specialised dietary supplements. The best way to meet your daily requirement is to allow sunlight to reach large areas of your skin unobstructed for at least 15–20 minutes, at least 2–3 times a week. Of course, this is best done in clear weather and only in warm climates; in northern latitudes, the skin finds it harder to synthesise sufficient vitamin D, and people living in these regions need to take supplements with a high vitamin D content. Such supplements usually contain vitamin D3 (cholecalciferol), which is best absorbed in this form; less commonly, but still found, is D2 (ergocalciferol), which is also good but not as effective.
It is important not to exceed the recommended dosage. Endocrinologists advise taking 1,500–2,000 IU (international units) per day to maintain blood levels (above 30 ng/ml), particularly during the winter months. The maximum permissible dose without a doctor’s prescription is 4,000 IU. People who are overweight usually need to take two to three times as much, as fatty tissue tends to retain vitamin D and prevents it from entering the bloodstream.
There are also quite a few foods that contain vitamin D, albeit in small amounts. These include:
- Cod liver. This is the richest source and is particularly popular in winter (around 4,000 IU of vitamin D per 100 g of product)
- Oily fish. Meat from species such as salmon, herring and mackerel is also very rich in vitamin D (500–1000 IU per 100 g of product)
- Tinned fish. Products containing tuna or sardines are not particularly rich in vitamin D and cannot meet the body’s daily requirement (150–250 IU per 100 g of product)
- Wild mushrooms. Chanterelles and morels are particularly rich in vitamin D (800–1200 IU per 100 g of product, depending on the specific species and growing conditions)
- Egg yolk. Thissource is a modest one, but it should be taken into account when calculating the total daily intake (20–40 IU per 100 g of product)
- Beef liver. The vitamin D content in this food is comparable to that of egg yolk (around 15–50 IU per 100 g of food).
Other foods contain only trace amounts of vitamin D and cannot affect its concentration in the body.
Where should you buy vitamin D supplements?
It is best to buy weight-loss vitamins from a pharmacy, and you should look for products that combine vitamin D with antioxidants and trace elements. A holistic approach is always better than taking a single specific substance, as everything in our body is interconnected. You should always consider the whole picture, rather than each individual element in isolation.
It is particularly important for women to monitor their vitamin D levels, so they should choose weight-loss vitamins for women that contain not only vitamin D3 but also iron or iodine. Hormonal balance is directly linked to fluid retention and fat distribution, and vitamin D plays a role in regulating these processes.
In conclusion
Many comprehensive body-shaping programmes include weight-loss vitamins, which focus not on aggressive intervention but on gently supporting the body’s natural processes and metabolism. When vitamin D levels return to normal, the body stops perceiving the deficiency as a stressor, as a result of which it begins to use energy more efficiently and is more readily inclined to burn fat.
Maintaining adequate levels of vitamin D in the body is not just a way to boost the immune system, but a prerequisite for establishing a healthy physiological foundation. Only with this foundation in place can a balanced diet and physical activity do their job properly.
Take care. Wishing you all the best, good luck, and every success with your fitness goals!
