The Basics – Human Health & Disease

• Health can be defined in certain ways, but heath is sum total of physical, mental and social well being.
•  Social + mental + physical = health
• Mind plays a very important role as it influenced by neural system, endocrine & immune system. The immune system maintains our heath, thus directly or indirectly mind affects our mental health.
• Heath can be maintained by…

DISEASE

• Due to any reason when the organs of our body gets affected then we are not healthy, that means we are having disease.

PATHOGEN

• They have the ability to produce Disease.
• They have high rate of pathogenicity.

PARASITE

• Organism that depends on other body for survival and nutrition is called pathogen.
• Parasite depends upon an organism called as HOST Body.
• The relationship between parasite and host is of AMMENSALISM TYPE.
• When the parasite becomes Superior over the Host body, then the interaction between the parasite and host is called INFECTION.

• Infection can occur through
  • Air
  • Water
  • Direct contact
  • Bite of insect
  • Contamination of materials and substances.
  • Example: Cholera caused by Vibrio cholera.