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Immunité et nutrition

Innate Immunity

First immune system, rapid and non-specific, present from birth

Definition

Immune defense system present from birth, which quickly and non-specifically reacts to any pathogen. It constitutes the first line of defense of the body

How it works

Innate immunity includes physical barriers (skin, mucous membranes), immune cells (neutrophils, macrophages, NK cells), and proteins (lysozyme, complement). It recognizes general patterns of pathogens without prior contact, hence its rapid action (minutes to hours). This immunity does not generate memory and does not improve with repeated exposure to the same pathogen. It works in close collaboration with adaptive immunity for optimal protection. Adequate nutrition in zinc, vitamin D, omega-3 fatty acids, and antioxidants is essential for its effectiveness

Role

Rapid and non-specific first line of defense against pathogens and foreign agents

Examples

  • Macrophage cells
  • Neutrophils
  • Lysozyme in saliva
  • Gastric acid
  • Acute inflammation
  • Complement proteins

Recommendations

Maintain optimal intake of zinc, vitamin C, D, and A to support innate cells. Regularly consume fatty fish rich in omega-3, red fruits rich in antioxidants, and products containing probiotics to strengthen mucous membranes. Ensure regular sun exposure to optimize vitamin D status

Key takeaway

Innate immunity is your first protective barrier: nourish it with key nutrients for rapid and effective defense

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