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The Jar Essentials: The Truth About Vitamin D Deficiency

Updated: Jan 20, 2023

As we all know, the most trustworthy source of Vitamin D is sunlight. Easy.

But wait, how much sunlight? 🤔 Isn't sunlight bad? 🤭 How much time on the sun is enough to avoid Vitamin D deficiency? 🧐

And what if we live in the United Kingdom where there's not enough sun throughout the year? 😢

The Jar Healthy Vending will try to answer all these important questions to help you maintain good health this spring.


The main function of vitamin D is to regulate the amount of calcium and phosphorus in the body, allowing the absorption of minerals.

Calcium and phosphorus in turn are needed to maintain healthy bones, teeth and muscles.

In addition, vitamin D is necessary for the normal functioning of the nervous system and immunity.

With a vitamin deficiency, people experience a constant feeling of fatigue, they quickly get tired, which significantly reduces the quality of life.


Vitamin D deficiency is a very common problem. Scientists estimate that approximately 1 billion people in the world are deficient in the vitamin.

Here are a number of indirect signs by which deficiency can be suspected:

  • frequent colds;

  • fatigue and constant fatigue;

  • pain in the bones or muscles;

  • frequent depressed mood;

  • skin problems: dryness, long healing of scratches and wounds;

  • hair loss.


The body can produce vitamin D on its own under the influence of ultraviolet radiation, or it can receive it from outside.

Sources of vitamin D can be divided into three groups: sunlight, food, and supplements.

The World Health Organisation gives an average recommendation, saying that in order to produce enough vitamin D, it is good to spend 5 to 15 minutes in the sun two to three times a week during the summer months.

Overall, experts do not advise to sunbathe (even in the morning or evening hours). In addition, it is necessary to use SPF creams, and yes - they do not interfere with the production of vitamin D.

When it comes to food (The Jar's favourite specialisation) - the best "food" sources of vitamin D are:

  • fatty fish (salmon, herring, mackerel)

  • red meat

  • egg yolks

  • mushrooms.

The vitamin can also be obtained from specially fortified foods, such as milk, yogurt, juice, breakfast cereals, and soy drinks.

Check out some Vitamin D naturally enriched foods at The Jar.

The Jar Vault

We have a variety of food and beverages to offer, including fresh food options. We offer a wide range of breakfast options, such as porridge and muesli. We have tasty meal options such as soups, broths, noodles and salad pots, and we also offer a great range of snacks and drinks. We can either put together a selection of our wonderful food and drink options or you can choose to tailor what you offer at your venue, workplace or educational institution.

Speak to us today to find out more about getting a healthy vending machine and begin offering healthier food and drink options at your location without delay to incur huge benefits.

Stay healthy with The Jar!

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