Does Coffee Interfere with Vitamin Absorption? What You Need to Know

Researchers are now examining how coffee impacts the supplements we take, and how to reduce potential negative effects.

Despite its many health benefits, coffee contains caffeine, which can disrupt the absorption of essential nutrients. Drinking coffee around the same time as taking supplements may hinder the body’s ability to absorb them properly.

Studies from Creighton University and the University of Miami found that caffeine can reduce the activity of vitamin D receptors in body cells, making it harder for the vitamin to be absorbed. Since vitamin D is crucial for bone health and immune function, high coffee consumption may negatively impact these systems.

If you take iron supplements, it’s important to know that drinking coffee close to your supplement time can significantly reduce iron absorption. Research shows a steep drop in iron levels when coffee is consumed with or right after a meal. This is especially important for individuals dealing with anemia.

Coffee also affects the body’s calcium balance. Daily coffee intake may increase calcium excretion through urine and reduce absorption in the intestines. In postmenopausal women, this could contribute to decreased bone density and a higher risk of fractures.

If you’re not ready to give up your beloved cup of coffee, you can avoid these issues simply by timing your intake. Waiting at least one hour between taking supplements and drinking coffee can help minimize its negative effects.

Coffee may be energizing and comforting, but it can interfere with your body's ability to absorb key nutrients. With a little timing and planning, you can still enjoy your coffee, without compromising your health.