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Immunité et nutrition

Cytokine

Cytokines are chemical messengers that coordinate immune responses throughout the body.

Definition

Small signaling proteins produced by immune cells that mediate communication between cells, directing immune responses, and regulating inflammation.

How it works

Cytokines are soluble signaling molecules released by immune cells, including interferons, interleukins, and tumor necrosis factors, that act as chemical communicators between cells. They regulate immune cell recruitment, activation, proliferation, and function, essentially orchestrating the immune response to infections and injuries. Cytokines exist in pro-inflammatory and anti-inflammatory types; a balance between these is crucial for effective immunity without causing tissue damage. Nutritional status significantly influences cytokine production and balance, with certain nutrients promoting anti-inflammatory cytokine profiles while others enhance inflammatory responses. Understanding cytokine dynamics helps explain how nutrition influences both immune competence and inflammation management.

Role

Direct immune cell communication and coordinate appropriate immune responses against pathogens and injury.

Examples

  • Interferon-gamma for antiviral immunity
  • TNF-alpha for inflammation
  • IL-10 for immune tolerance
  • IL-6 for acute phase response

Recommendations

Support balanced cytokine production through adequate sleep (7-9 hours), regular exercise, stress management, and nutrient-dense nutrition. Emphasize foods rich in omega-3 fatty acids, polyphenols, and vitamin D to promote balanced cytokine profiles.

Key takeaway

Optimized cytokine balance, supported by proper nutrition and lifestyle, is essential for effective immunity without chronic inflammation.

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