Milk and water most efficient for absorbing vitamin D

Credit: CC0 Public Domain

Scientists from Aarhus University in Denmark found vitamin D food fortification worked better with water and milk than in juice.

By measuring the maximum concentration over time, the researchers found the bioavailability of vitamin D to be higher in milk and water.

The research was presented at the European Congress of Endocrinology and was conducted by Dr. Rasmus Espersen et al.

Vitamin D insufficiency is a global health problem. It has been linked with multiple health issues, including the immune response to COVID-19.

Estimates show that as much as 40% of the European population could be suffering from vitamin D deficiencies, with 13% potentially suffering from severe vitamin D deficiency.

Vitamin D supplements are therefore vital, and knowing whether they will be absorbed and how best to aid absorption is crucial.

In the study, the team tested 30 women aged 60–80 with vitamin D deficiency.

The study aimed to measure immediate changes in blood concentrations in response to the consumption of various food items containing 200 g D3.

In random order, 500 mL of water, milk, juice, juice with vitamin D bound to whey protein isolate as well as 500 mL of water without vitamin D (placebo) were presented to the study participants.

Blood samples were collected at 0h, 2h, 4h, 6h, 8h, 10h, 12h, and 24h on each study day.

The team found that whey protein isolate in apple juice did not enhance the maximum concentration of D3 compared to juice.

However, compared to juice, D3 concentrations were much higher in response to the intake of milk and water. No difference was observed between milk and water.

Therefore, the conclusion from this study is that vitamin D fortification works better in water or milk than in juice.

If you care about supplements, please read studies about supplements that can improve strength and cognition in older people, and vitamin K may lower your heart disease risk by a third.

For more information about wellness, please see recent studies about diet that may strongly prevent memory loss and dementia, and results showing that vitamin D can help reduce inflammation.

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