According to 2017 Nutrients research, about one-third of the US population was at risk of vitamin or mineral insufficiency.
Nutritional deficiencies often cause health issues with visible symptoms, while clinical testing may reveal inadequate intake symptoms.
If possible, eat more vitamins and minerals, say experts. Food nutrients “are more bioavailable and can increase levels faster,” says Ohio State University Wexner Medical Center registered dietician Amber Core, RD.
"Vitamin D is one nutrient that most Americans are deficient in, especially those in large cities or central and Midwestern states that don't get enough sun," Core adds. Around 95% of US adults lack vitamin D, says OSULPI.
According to the OSULPI, almost 44% of Americans don't get enough calcium. Calcium insufficiency can cause muscle cramps, brittle nails, and dry skin, Riehm adds.
Core believes many people don't receive enough potassium, one of the body's major electrolytes. We require 3,400 mg per day from potatoes, bananas, raisins, and yogurt.
Core states “Iron deficiency is quite common in the United States.” “It can cause microcytic anemia, fatigue, pale skin, brittle nails, and an increased heart rate.”
The NIH estimates half of Americans lack magnesium. This mineral maintains blood pressure and forms new bone, protein, and DNA.
Close to 40% of us don't get enough vitamin C, says OSULPI. It include citrus fruits, kiwi, strawberries, red peppers, broccoli, and potatoes contain vitamin C.
Insufficient vitamin A levels affect 43% of Americans, according to the OSULPI. Core states vitamin A is found in orange foods including sweet potatoes, pumpkin, and salmon.