Mineral (nutrient)

Lore & Background

Twenty chemical elements are known to be required to support human biochemical processes, with evidence for a few more. Oxygen, hydrogen, carbon, and nitrogen (CHON) comprise about 96% of the human body by weight and are usually not considered minerals in nutrition. Phosphorus occurs at about two-thirds of calcium, making up about 1% of body weight. The other major minerals—potassium, sodium, chlorine, sulfur, and magnesium—make up only about 0.85% of body weight. The remaining ultratrace minerals comprise just 0.15% of the body, about one hundred grams total for an average person.

Reader's Guide

Minerals are essential for life, serving structural and functional roles in the human body. The five major minerals—calcium, phosphorus, potassium, sodium, and magnesium—are required in larger amounts, while trace elements such as iron, zinc, and iodine are needed in smaller quantities. Some diversity of opinion exists about the essential nature of various ultratrace elements; for example, whether chromium is essential in humans is debated, with the United States and Japan designating it as essential, but the European Food Safety Authority disagreeing. The gap between recommended daily intake and safe upper limits can be small, as seen with calcium and iodine. Dietary supplements can provide minerals, but diet can meet all requirements. Plants require a similar list of minerals, and fertilizers are tailored to address deficiencies. Minerals cycle through ecosystems via bacteria and fungi, and biomineralization constructs bones, seashells, and other structures.

Did You Know?

• The five major minerals in the human body are calcium, phosphorus, potassium, sodium, and magnesium.
• The four organogenic elements (carbon, hydrogen, oxygen, nitrogen) comprise roughly 96% of the human body by weight and are not considered minerals in nutrition.
• Molybdenum is an essential mineral, but metallic molybdenum has no nutritional benefit; only molybdates are sources.
• The European Food Safety Authority does not agree that chromium is an essential nutrient, unlike the United States and Japan.

The Global Affordability Gap

Africa bore the heaviest burden, with 66.6 percent of its population priced out of adequate nutrition, while Northern America and Europe saw only 5.0 percent in the same predicament. Asia sat at 28.1 percent, Latin America and the Caribbean at 27.4 percent, and Oceania at 19.6 percent. This is frequently framed as a political issue rather than purely an economic one.

Four Pillars of a Healthful Plate

The Food and Agriculture Organization and the World Health Organization jointly distilled what constitutes a healthy diet into four interlocking principles. First, a diet must be adequate—meeting the body's energy and essential nutrient needs without overshooting them, thereby supporting every physiological function. Second, it should be diverse, drawing from a broad spread of nutritious foods both within and across food groups so that the full spectrum of required nutrients is secured. Third, the diet must be balanced, distributing energy among protein, fats, and carbohydrates in a way that promotes healthy weight, growth, and physical activity while guarding against disease. Fourth, it should be moderate, keeping to small quantities or zero of items that carry negative health consequences, such as highly salty or sugary products. Together these four criteria form a framework that transcends any single cultural food tradition, acknowledging that the requirements for a healthy diet can be satisfied through a variety of plant-based and animal-based foods, though those following a vegan path must seek additional sources of vitamin B12.

Institutional Blueprints for Eating Well

Major health bodies have translated the abstract principles of good nutrition into concrete, actionable guidance. The United States Department of Agriculture's Dietary Guidelines for Americans propose three model patterns—a Healthy U.S.-style, a Healthy Vegetarian, and a Healthy Mediterranean-style—each emphasizing plant-based foods and lower animal-product consumption for both health and environmental sustainability. The American Heart Association, World Cancer Research Fund, and American Institute for Cancer Research converge on a diet built largely from unprocessed plant foods, highlighting the protective potential of tomato cooked with oil, allium vegetables, and cruciferous vegetables against cancer, while keeping energy density low to guard against weight gain.

Disease, Policy, and the Fight for Better Choices

The absence of a healthy diet is a massive contributor to the global disease burden, exacting enormous health, economic, and social costs. The WHO has specifically linked insufficient consumption of vegetables and fruit to 2.8 percent of all deaths worldwide. Beyond biology, the environment in which people make food choices matters enormously. Advertising can steer preferences toward unhealthy options, and the organizations behind dietary guidance stress that reversing this trend requires consumers to be informed, motivated, and empowered. In some countries, nutrition facts labels are legally mandated so that shoppers can compare products based on health-relevant components. Yet the issue is often political: the stark regional disparities in affordability suggest that access to a healthy diet is shaped by governance, trade policy, and economic structure as much as by individual will. Meanwhile, the WHO also cautions against foods contaminated by pathogens such as E. coli or tapeworm eggs, against directly toxic substances like heavy metals, and against carcinogenic compounds including benzene, reminding that a safe diet is as important as a nutritious one.