Minerals and choline

Calcium provides bone and tooth structure and supports muscle and nerve function. Calcium-salt mass is not elemental calcium mass.

Dairy, some fortified plant beverages and certain tofu products provide calcium. Consider food and supplements together.

Magnesium supports enzymes and neuromuscular function. Compare elemental magnesium separately from the mass and evidence of glycinate or threonate formulations.

Nuts, seeds, legumes and whole grains provide magnesium. Elemental magnesium on a label differs from total compound mass.

Iron supports haemoglobin oxygen transport. Fatigue is not necessarily iron deficiency; routine inclusion needs a population-specific rationale.

Meats, legumes and fortified grains provide iron. Heme and non-heme iron absorption is influenced by different factors.

Zinc supports enzymes, immunity and wound healing. Correcting deficiency is not equivalent to stronger immunity from chronic high doses.

Meat, shellfish, legumes and nuts provide zinc. Prolonged excess can interfere with copper status.

Selenoproteins support thyroid and antioxidant systems. Mechanistic involvement does not prove extra doses prevent aging or cancer.

Seafood, meat and grains can provide selenium; food levels vary with origin, and excess intake also carries risk.

Iodine forms thyroid hormones. Consider iodized salt, seafood and thyroid context; seaweed is not automatically suitable at unlimited amounts.

Iodized salt, seafood and some dairy can provide iodine. Iodine content in seaweed can vary greatly.

Copper supports iron metabolism, connective tissue and enzymes. Trace requirements still need balance within total intake.

Shellfish, nuts, seeds and whole grains provide copper. Prolonged high-dose zinc may affect copper absorption.

Manganese is a cofactor for metabolic enzymes. Physiological necessity does not imply routine high-dose supplementation.

Whole grains, nuts and legumes provide manganese. Nutritional needs and high-dose supplement safety are separate questions.

Molybdenum supports enzymes that process sulfur-containing amino acids and other substrates. Its basic role is not a standalone anti-aging claim.

Legumes, grains and nuts provide molybdenum, which supports the normal activity of several enzymes.

Phosphorus contributes to bone, membranes, DNA and ATP. Its presence in ATP does not show that extra phosphorus increases energy.

Dairy, meat, fish and legumes provide phosphorus. Both naturally occurring and added forms contribute to total intake.

Potassium supports intracellular fluid and electrical gradients. Total diet and kidney function matter; high-potassium supplementation is not universal.

Fruit, vegetables, legumes and dairy provide potassium. Extra potassium can require professional guidance in certain conditions or with certain medicines.

Choline supports membranes, methyl transfer and acetylcholine synthesis. It is an essential nutrient, though not a B vitamin.

Eggs, meat, fish and legumes provide choline, which contributes to cell structure and multiple physiological processes.

Some dietary-reference systems include chromium, but human essentiality is questioned. “Trace element” does not automatically mean “must include.”

Chromium occurs in small amounts in some foods; authorities differ on whether it is essential for humans.

One gram of a magnesium compound is not one gram of elemental magnesium. Check the specification and labeled elemental amount, not only the ingredient name or compound mass.

Sodium supports fluid balance and nerve and muscle function; table salt and processed foods are common sources. WHO recommends adults consume less than 2,000 mg sodium daily; this is population dietary guidance, not a supplement dose.

Chloride contributes to fluid balance and is a component of stomach digestive juices. Sodium chloride in salt and many foods provide chloride.

Sulfur occurs in certain amino acids and other molecules in the body. Sulfur-containing dietary substances come from a range of protein foods; evidence for one compound should not be generalized to all sulfur sources.