They used a system of measurement called the Body Mass Index to define words like obese and overweight.

VOA: special.2009.07.21

A recent report shows that the small organ has a much more important job in the body's defense system than once believed.

VOA: special.2009.08.25

Your body's natural defense system needs to be at its strongest to protect you against disease.

VOA: special.2009.04.29

MS symptoms can depend on where the nerve scars are in the body's central nervous system.

VOA: special.2009.01.06

They also may use immunotherapy -- getting the body's immune system to fight the cancer.

VOA: special.2010.07.06

Autoimmune diseases affect the immune system C the body's natural defenses for fighting disease.

VOA: special.2009.04.14

Evidence shows that extended periods of cortisol in the body weakens bones, damages nerve cells in the brain and weakens the body's defense system against disease.

VOA: special.2009.03.24

The central nervous system of the body includes the brain and the spinal cord.

VOA: special.2009.01.06

This complex system throughout the body makes and transports a protective fluid called lymph.

VOA: special.2011.03.23

But it may cause hidden damage to the body's lymphatic system and kidneys.

VOA: special.2009.05.26

Systemic lupus can affect almost any organ or organ system in the body.

VOA: special.2010.06.15

Autoimmune diseases affect the immune system, the body's natural defenses for fighting disease.

VOA: special.2010.06.15

Those diseases affect the immune system the body's natural resistance to disease.

VOA: special.2009.11.24

Others affect an organ system or even the whole body.

VOA: special.2010.06.15

Exercise also improves the body's defense system against disease.

VOA: special.2009.03.24

The spleen is part of the body's lymphatic system.

VOA: special.2009.08.25