How to Avoid and Cure Vitamin D Deficiency

Vitamin D deficiency can be dangerous, so watch out for the signs described in this article and make sure that you maintain healthy levels in your body.

Vitamin D is in all of the following healthy foods, so ensure you eat a mix of them in order to maintain good levels and optimise your fitness. Sunlight is also an essential element to enable the human body to create vitamin D. These are the most important factors when it comes to maintaining healthy vit D levels.

Vitamin D deficiency is a global health problem. “With all the medical advances of the century, vitamin D deficiency is still epidemic. Over a billion people worldwide are vitamin D deficient or insufficient.”


Vit D helps regulate the amount of calcium and phosphate in the human body. These nutrients are needed to keep bones, teeth and muscles healthy.

A vitamin D deficiency can lead to weaker bones and even deformities such as rickets in children, and bone pain caused by a condition called osteomalacia in adults. Vit D can also help prevent osteoporosis, which is another condition that will cause bones to deteriorate. It regulates the functions of over 200 genes and is essential for growth and development.

In addition, the vitamin may affect the immune system and could help to manage autoimmune conditions such as RA, Type 1 diabetes, and multiple sclerosis (MS).

Symptoms of vitamin D deficiency vary from person to person. Typical symptoms include:


The following foods all contain vit D in varying amounts, and are healthy additions to any nutrition plan.


Oily fish such as salmon, tuna and trout, as well as oils from fish, have some of the highest quantities of vitamin D found in food sources.

Fish to help avoid vitamin d deficiency
Fish contains high levels of vit D

These may include:


If you are vegetarian or vegan, mushrooms can be a great option. Some types of mushroom contain high amounts of vitamin D.

These include:

  • Raw maitake mushrooms: These contain 562 IU per 50 grams (g), which is 94 percent of a person’s RDA.
  • Dried shiitake mushrooms: These contain 77 IU per 50 g, which is 12 percent of a person’s RDA.

Mushrooms with exposure to ultraviolet (UV) light can also contain large amounts of vitamin D. These may include:

  • UV-exposed raw Portobello mushrooms: These contain 568 IU per 50 g, which is 95 percent of a person’s RDA.
  • UV-exposed raw white mushrooms: These contain 523 IU per 50 g, which is 87 percent of a person’s RDA.


Manufacturers add vitamin D to many commercially available foods. These foods as described as being fortified with vitamin D, or other nutrients.

Common foods with extra vitamin D and other nutrients include:

  • cow’s milk
  • orange juice
  • various breakfast cereals

Vitamin D is also added to all infant formula milk, as well as some breakfast cereals, fat spreads and non-dairy milk alternatives. 

The amounts added to these products can vary and may only be added in small amounts. Manufacturers must add vitamin D to infant formula milk by law.


eggs on wooden table against vitamin d deficiency
Stay on top of your nutrition

Egg yolks are be high in vitamin D. For example, a dish of scrambled eggs using two large hen eggs contains 88 IU, which is 15 percent of a person’s RDA.


Use the following information to make sure you are getting enough vit D in your diet.

FoodStandard Portion SizeCalories in Standard PortionaVitamin D in Standard Portion (μg)a,bCalories per 100 gramsa
Salmon, sockeye, canned3 ounces14217.9167
Trout, rainbow, farmed, cooked3 ounces14316.2168
Salmon, chinook, smoked3 ounces9914.5117
Swordfish, cooked3 ounces14614.1172
Sturgeon, mixed species, smoked3 ounces14713.7173
Salmon, pink, canned3 ounces11712.3138
Fish oil, cod liver1 tsp4111.3902
Cisco, smoked3 ounces15011.3177
Salmon, sockeye, cooked3 ounces14411.1169
Salmon, pink, cooked3 ounces13011.1153
Sturgeon, mixed species, cooked3 ounces11511.0135
Whitefish, mixed species, smoked3 ounces9210.9108
Mackerel, Pacific and jack, cooked3 ounces1719.7201
Salmon, coho, wild, cooked3 ounces1189.6139
Mushrooms, portabella, Exposed to Ultraviolet Light, grilled½ cup187.929
Tuna, light, canned in oil, drained3 ounces1685.7198
Halibut, Atlantic and Pacific, cooked3 ounces944.9111
Herring, Atlantic, cooked3 ounces1734.6203
Sardine, canned in oil, drained3 ounces1774.1208
Rockfish, Pacific, mixed species, cooked3 ounces933.9109
Whole milkc1 cup1493.261
Whole chocolate milkc1 cup2083.283
Tilapia, cooked3 ounces1093.1128
Flatfish (flounder and sole), cooked3 ounces733.086
Reduced fat chocolate milk (2%)c1 cup1903.076
Yogurt (various types and flavors)c8 ounces98-2542.0-3.043-112
Milk (non-fat, 1% and 2%)c1 cup83-1222.934-50
Soymilkc1 cup1092.945
Low-fat chocolate milk (1%)c1 cup1782.871
Fortified ready-to-eat cereals (various)c⅓-1¼ cup74-2470.2-2.5248-443
Orange juice, fortifiedc1 cup1172.547
Almond milk (all flavors)c1 cup91-1202.438-50
Rice drinkc1 cup1132.447
Pork, cooked (various cuts)3 ounces122-3900.2-2.2143-459
Mushrooms, morel, raw½ cup101.731
Margarine (various)c1 Tbsp75-1001.5533-717
Mushrooms, Chanterelle, raw½ cup101.438
Egg, hard-boiled1 large781.1155


The body creates vitamin D from direct sunlight on the skin when outdoors.

However, in countries that experience darker months in the winter, especially Scandinavian countries, it may be impossible to get enough sunlight in order to create enough Vitamin D naturally.


The following advice is from the British NHS.

“Most people can make enough vit D from being out in the sun daily for short periods with their forearms, hands or lower legs uncovered and without sunscreen from late March or early April to the end of September, especially from 11am to 3pm.

It’s not known exactly how much time is needed in the sun to make enough vit D to meet the body’s requirements. This is because there are a number of factors that can affect how vit D is made, such as your skin colour or how much skin you have exposed.

girl outside in the sun.
Stay healthy

But you should be careful not to burn in the sun, so take care to cover up or protect your skin with sunscreen before your skin starts to turn red or burn.

People with dark skin, such as those of African, African-Caribbean or south Asian origin, will need to spend longer in the sun to produce the same amount of vit D as someone with lighter skin.  

How long it takes for your skin to go red or burn varies from person to person. Cancer Research UK has tips to help you protect your skin in the sun.

Your body can’t make vit D if you’re sitting indoors by a sunny window because ultraviolet B (UVB) rays (the ones your body needs to make vit D) can’t get through the glass.”


Equatorial countries naturally have more consistent, year-round sunshine in comparison to those in more northern or southern locations such as Scandinavia, Iceland, Canada and Scotland. As vit D symptoms may manifest themselves in various ways, or can often be confused with other ailments, it is always a good idea to get your levels checked.

Approximately ten per cent of the Danish population have extremely low levels of vit D, with levels so severe that they risk developing weak bones.

For this reason, the Nordic nutrition recommendations have been changed, now advising that people get 10 µg of vit D a day, instead of the previous 7.5 µg.

Cyclists in Copenhagen.
Maximise the time you spend outdoors

One of Denmark’s leading scientists in the field of vit D research is associate professor Lars Rejnmark from Aarhus University’s Department of Clinical Medicine.

He is not surprised by the new study’s conclusions and applauds the fact that vit D recommendations have now been updated.

“It’s indeed sensible to increase the recommended dose as vitamin D deficiency is common in Denmark, especially during the winter months,” says Rejnmark.

“Vitamin D is a hot topic at the moment,” says Professor Inge Tetens from the National Food Institute at Denmark’s Technical University (DTU), who sits in the working group under the Nordic Council of Ministers that is responsible for updating the Nordic nutrition recommendations.

“The review of the latest studies shows that people in Scandinavia need to get more vit D from their diet than recommended by the previous working group,” says Tetens.

The literary review that lead to this conclusion was assessed by nutrition researchers from Finland, Norway, and Iceland. It consists of a systematic review of 1,706 studies published between 2000 and 2010 on the correlation between vit D, status, and health effects.

The review concludes that “10 µg of vit D per day is necessary if promotional health effects are to be achieved for people resident in the Nordic Region, where the sun does not shine for much of the year”.


If you choose to take vitamin D supplements, 10μg a day will be enough for most people.

People who take supplements are advised not to take more than 100μg of vit D a day, as it could be harmful (100 micrograms is equal to 0.1 milligrams).

This applies to adults, including pregnant and breastfeeding women and the elderly, and children aged 11 to 17.

Children aged 1 to 10 shouldn’t have more than 50μg a day. Babies under 12 months shouldn’t have more than 25μg a day.

Some people have medical conditions that mean they may not be able to take as much vit D safely.

If in doubt, you should talk to your doctor. If your doctor has recommended you take a different amount of vit D, you should follow their advice.

The amount of vit D contained in supplements is sometimes expressed in international units (IU), where 40 IU is equal to 1 microgram (1µg) of vit D.

There’s no risk of your body making too much vit D from sun exposure, but always remember to cover up or protect your skin before the time it takes you to start turning red or burn.


A vitamin D deficiency can affect both physical and mental health, but many people have low levels of vitamin D without realizing.

The most accurate way to measure how much vit D is in your body is the 25-hydroxy vitamin D blood test. A level of 20 nanograms/milliliter to 50 ng/mL is considered adequate for healthy people. A level less than 12 ng/mL indicates vitamin D deficiency.

With over a billion people worldwide who are vit D deficient, and many serious consequences that result from that state, make sure that you are spending enough time outside and getting appropriate levels of vit D in the foods that you choose to eat.

Want to improve your health further? Try these high protein vegetarian foods or vegan soup recipes.

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