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New Evidence Shows Body Can Absorb Vitamins from Air

Emerging research suggests that we may absorb essential nutrients from the air we breathe, a concept now being explored under the term “aeronutrients.” In a paper published in Advances in Nutrition, scientists propose that breathing does more than deliver oxygen—it may supplement our diets with trace nutrients like iodine, zinc, and vitamins. While the idea may seem novel, evidence supporting it spans decades.

For instance, a 1960s study found that laundry workers exposed to airborne iodine had higher iodine levels in their bodies. More recently, researchers in Ireland observed that children living in coastal areas rich in seaweed had better iodine levels due to iodine in the air, despite no notable differences in their diets.

The lungs, unlike the gut, can absorb larger molecules directly into the bloodstream. This rapid process mirrors how inhaled drugs, such as nicotine or anesthetics, take effect almost instantly. Scientists believe similar pathways could allow nutrients to enter the body via the lungs, nasal passages, and throat.

Aeronutrients may include familiar elements like manganese, magnesium, and even aerosolized vitamins. Decades ago, inhalable vitamin B12 proved effective in treating deficiencies, hinting at the potential for other nutrients to be delivered this way.

While the science is still developing, the implications are vast. Future studies could reveal whether breathing in natural environments—like forests or oceans—can enhance nutrient intake. This discovery might reshape nutritional guidelines, emphasizing not just what we eat but also the air we breathe. Perhaps one day, inhaling nutrients will be as routine as taking a multivitamin.

Until then, spending time outdoors may be doing more for your health than you realize.