For that reason, D3 is usually recommended, but there is not a huge difference, and both offer the same benefits.

By bypassing that conversion step, vitamin D3 raises the serum levels more effectively. Upon consumption, D2 is converted to D3 by the liver – the natural form of vitamin D in the body.

The main difference between vitamin D2 (ergocalciferol) and D3 (cholecalciferol) is the source: D2 is plant-based and D3 is animal-derived. Keep in mind that the amount of sunlight needed will vary from person to person depending on their age, ethnicity, and underlying health status. In addition to seasonal change, winter months offer even less sunlight, especially in the northeastern states. However, this is not a reliable source of vitamin D due to increased risks of skin cancer. It is often referred to as the “sunshine vitamin” because direct exposure to sunlight produces vitamin D from cholesterol. It can be found naturally in foods such as fatty fish like salmon and tuna, and vitamin D-fortified products including milk, cereals, and orange juice. Vitamin D is a fat-soluble vitamin that has many vital functions in the body, including bone development and bone health.

If you’re considering taking vitamin D, first talk to your doctor to determine what type, form, and dosage is right for you. Vitamin D became even more “popular” this past year during the COVID-19 pandemic when it was cited as an essential immune-boosting supplement by many healthcare providers. This supplement is one of the most commonly filled prescription vitamins at the pharmacy with many over-the-counter (OTC) purchases as well. Vitamin D is an essential nutrient for good bone health and a healthy immune system - it’s important to make sure that you’re getting a sufficient amount.

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