The mass of an atom relative to that of carbon-12. This is approximately the sum of the number of protons and neutrons in the nucleus. Where more than one isotope exists, the value given is the abundance weighted average. Isotopes. Atoms of the same element with different numbers of neutrons.
Eating disorders. Eating disorders are abnormal eating habits that can threaten your health or even your life. They include: Anorexia nervosa: Individuals believe theyâre fat even when theyâre dangerously thin and restrict their eating to the point of starvation.
What is Anorexia? Anorexia Nervosa is a psychological and possibly life-threatening eating disorder defined by an extremely low body weight relative to stature (this is called BMI [Body Mass Index] and is a function of an individualâs height and weight), extreme and needless weight loss, illogical fear of weight gain, and distorted perception of self-image and body.