Infection

Definition

Infection is the invasion and multiplication of microorganisms such as bacteria, viruses, and parasites that are not normally present within the body. These pathogens can cause illness by disrupting normal bodily functions and triggering immune responses.

5 Must Know Facts For Your Next Test

1. Infections can significantly impact hematologic health by causing anemia and other blood disorders.
2. Nutritional status plays a critical role in both susceptibility to infections and recovery from them.
3. Micronutrients like iron, vitamin C, and zinc are essential for maintaining a robust immune system to fend off infections.
4. Infections can lead to increased metabolic demands, making adequate nutrition crucial for recovery.
5. Chronic infections can result in long-term hematologic complications such as chronic inflammation and impaired red blood cell production.

Review Questions

• How does nutritional status influence susceptibility to infections?
• Which micronutrients are particularly important for preventing and fighting infections?
• What are some potential hematologic complications resulting from chronic infections?

Related terms

Immune System: The body's defense system against infectious organisms and other invaders.

Anemia:

A condition characterized by a deficiency of red blood cells or hemoglobin, often caused by infection or poor nutrition.

Micronutrients:

Essential vitamins and minerals required in small amounts for proper body functioning, including immune response.