How long is best for teenagers to take calcium supplements?

Generally, there is no fixed duration for calcium supplementation in adolescents. The length and need for supplementation should be adjusted based on dietary intake, growth requirements, and individual health status. In most cases, a temporary supplementation period (such as 1–3 months) can be followed by an evaluation of effectiveness. If there are concerns, it is advisable to consult a healthcare provider early. Detailed analysis is as follows:

Adolescents are in a rapid phase of growth and development, during which bone growth increases the demand for calcium. If daily diets provide sufficient calcium-rich foods—such as milk, soy products, and leafy green vegetables—and there are no obvious signs of calcium deficiency (e.g., leg cramps, fatigue), long-term additional calcium supplementation is unnecessary. Adequate calcium needs can typically be met through diet alone, avoiding blind supplementation that may place extra burden on the body.

If dietary calcium intake is insufficient or symptoms of deficiency appear, short-term, phased calcium supplementation may be conducted under professional guidance. After 1–3 months of supplementation, the regimen should be reassessed based on evaluations of calcium status or symptom improvement. Once symptoms improve and dietary calcium intake reaches recommended levels, supplementation can be gradually reduced or discontinued, shifting instead to maintenance through diet. This helps prevent potential issues associated with prolonged excessive calcium intake, such as constipation or impaired absorption of other minerals.

Prior to starting calcium supplementation, adolescents should first assess their daily dietary calcium intake and prioritize obtaining calcium from food sources. When additional supplementation is necessary, an appropriate type of calcium supplement suitable for adolescents should be selected, and the recommended dosage should be strictly followed.