Vitamin D is known as the "sunshine vitamin" because your skin produces it naturally when exposed to sunlight, specifically ultraviolet B (UVB) rays, making it unique among vitamins as the body can synthesize it rather than relying solely on diet. It's crucial for bone health (calcium absorption) and immune function, but deficiency is common due to limited sun exposure.
Unlike other vitamins, our bodies have the unique ability to make vitamin D from the sun. Studies suggest a link between vitamin D and a healthy immune system. It enhances our bodies' ability to absorb calcium and reduces our risk of fractures and broken bones. Vitamin D also helps regulate our mood.
10 Unexpected Signs of a Vitamin D Deficiency
Vitamin D3 (cholecalciferol) is generally better than Vitamin D2 (ergocalciferol) because it is more effective at raising and maintaining blood levels of vitamin D, is produced naturally by the body from sunlight, and is often recommended by doctors for deficiency correction. While both forms increase vitamin D in the blood, D3 is more potent and longer-lasting, making it the preferred choice for most people, though D2 is suitable for vegans.
The foods highest in vitamin D are fatty fish (salmon, mackerel, sardines, tuna) and fish liver oils (like cod liver oil), with egg yolks, beef liver, and UV-exposed mushrooms also containing significant amounts, but most people get vitamin D from fortified foods like milk, cereals, and juices.
Although the list of foods naturally high in vitamin D is a short one, there are foods and beverages – like milk, orange juice, nutritional shakes and breakfast cereals fortified with the nutrient to help make life a little easier!
While natural sources are limited, UV-exposed mushrooms are the best natural vegetable source of Vitamin D2. Among fruits, fortified orange juice is the most effective way to get Vitamin D3. Other supportive foods include avocados and bananas which help in the absorption and activation of the vitamin.
Taking Vitamin D3 daily is generally safe and beneficial for bone health and immune function, but exceeding the recommended daily limit (usually 100 micrograms or 4,000 IU for adults) can lead to harmful calcium buildup (hypercalcemia), causing nausea, weakness, kidney stones, and even kidney damage over time, so moderation is key and consulting a doctor for personalized dosage is recommended.
Growing evidence has demonstrated that vitamin D has a role in sleep regulation [12]. Specifically, vitamin D deficiency (VDD) can increase risk of sleep disorders and is associated with sleep difficulties, shorter sleep duration, and nocturnal awakenings in children and adults [13,14,15].
You should primarily get vitamins from a varied diet, but common daily supplements often include Vitamin D (for bones/immune), B vitamins (for energy/metabolism, especially B12 for vegans), Vitamin C (immune/antioxidant), and sometimes Iron (energy/red blood cells), Magnesium (muscle/nerve), or Calcium, depending on your diet and lifestyle, with multivitamins helping fill gaps but consult a doctor to avoid overconsumption.
Yes, you can do a vitamin D test at home using simple finger-prick kits (like TouchBio, 2San, We Test Bio) that provide quick, preliminary results (often in 10 mins) by analyzing a drop of blood to check if levels are sufficient, insufficient, or deficient, helping you monitor bone health and immune support, but you should always discuss abnormal results with a doctor for proper diagnosis and treatment.
In children, it can cause rickets. Rickets is a rare disease that causes the bones to become soft and bend. African American infants and children are at higher risk of getting rickets. In adults, severe vitamin D deficiency leads to osteomalacia.
People need vitamin B-12 for the brain to work well. If not treated, vitamin B-12 deficiency can lead to issues with the nerves, brain or spinal cord. These might include lasting tingling in the hands and feet or trouble with balance.
Green peas (Matar): Green peas, also known as matar, serve as a beneficial source of vitamin D. Including green peas in your meals can provide you with this essential nutrient.
As for people with darker skin, they have more melanin, so less UV light gets absorbed to create vitamin D3. They need more sun exposure to produce vitamin D3 than those with lighter skin.
Vitamin D's anti-inflammatory properties help relieve joint pain. Vitamin D also can help manage autoimmune conditions that affect the joints, including multiple sclerosis, rheumatoid arthritis, and Type 1 diabetes.
Regardless of the insomnia aetiology, Magnesium-melatonin-vitamin B complex supplementation reduces insomnia symptoms, as well as its consequences, thus improving the patients' quality of life and preventing potential unwanted clinical, social, economic, or emotional repercussions.
As breakfast is so often the largest (and most important) meal of the day, the morning is a prime time to take the sunshine vitamin. Plus, vitamin D levels tend to be highest during the day because of our exposure to the sun. So, taking it in the morning sets you up for further success.
A study has found that vitamin D supplements can effectively reduce the severity of generalized anxiety symptoms (18). Low vitamin D levels were linked to increased depression and anxiety symptoms in a study on the role of vitamin D in anxiety (19).
Possible symptoms include:
You should not use cholecalciferol if you have had an allergic reaction to vitamin D, or if you have: high levels of vitamin D in your body (hypervitaminosis D); high levels of calcium in your blood (hypercalcemia); or. any condition that makes it hard for your body to absorb nutrients from food (malabsorption).
The best sources are the flesh of fatty fish and fish liver oils. Smaller amounts are found in egg yolks, cheese, and beef liver. Certain mushrooms contain some vitamin D2; in addition some commercially sold mushrooms contain higher amounts of D2 due to intentionally being exposed to high amounts of ultraviolet light.
In case of vitamin D deficiency, the whole body is affected. Sun rays enable the synthesis of vitamin D in the skin. Apart from this, it can also be taken from nuts and foods containing vitamin D. The main nuts containing vitamin D are cashews and hazelnuts.
No, blueberries do not contain vitamin D. Vitamin D is typically found in fortified foods, fatty fish, fish liver oils, eggs, and mushrooms.
Another fish that offers a lot of vitamin D is tuna. A 100-gram serving of tuna offers around 270 IU of vitamin D. That's over 30% of the daily recommended intake [6]. You can buy tuna fresh or canned.