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Nutrition préventive

Nutritional biomarker

Biomarker for evaluating nutritional status and nutrient intakes.

Definition

A measurable biological indicator reflecting the intake, status, or effect of a nutrient on the body. It allows for an objective evaluation of a person's nutritional state.

How it works

Nutritional biomarkers are measurable substances or parameters in blood, urine, or tissues that indicate an individual's nutritional status. They can reflect recent nutrient intakes (short-term markers) or long-term status (long-term markers). These markers are essential in preventive nutrition as they enable early detection of nutritional deficiencies or excesses before clinical symptoms appear. They are also used to evaluate the effectiveness of nutritional interventions and adapt personalized recommendations.

Role

Providing an objective measure of nutritional status and guiding preventive dietary interventions.

Examples

  • Vitamin B12 level
  • Serum ferritin
  • Serum calcium
  • Homocysteine level
  • 25-hydroxyvitamin D

Recommendations

Regularly have relevant biomarkers measured during annual health check-ups. Adjust diet based on results to prevent deficiencies. Consult a dietitian to interpret results and adjust intakes.

Key takeaway

Nutritional biomarkers enable an objective and early evaluation of nutritional status for optimal prevention.

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