Answer:
1. Heredity can bring certain traits that affect your overall weight. There is a link between body weight and heredity. With activity level, the more active you are the more calories you burn and with body composition, this is a measure of how much body fat you have.
2.BMI= weight (in pounds)/ height( in inches) 2 x 703
3. There are high blood pressure and type 2 diabetes for being overweight. For being underweight there are anemia and heart irregularities.
4. A fad diet is a popular diet that may help a person lose or gain weight but without proper regard for nutrition and other health issues. Two problems are they exclude important nutrients and also the weight loss achieved can be temporary.
Explanation:
Communicable Diseases are illnesses which are caused by pathogens or microorganisms, e.g virus, and bacteria, that are transmitted from one person or animal to another in different ways. It can spread through contact with body fluids or blood, sexual contact, contaminated food, and water, or through the air.With the advancement of medical science, different ways of controlling communicable diseases have emerged throughout the centuries and have been proven to lessen the mortality rate as time passed.One is the development of Immunization. Immunization; to make one's body immune to a certain disease so it will be easier for the body to combat the pathogens in contact with it. Until now, production of Immunization is still being updated depending upon the diseases that are currently affecting the majority. The development of immunization has given medical science, then and now, a very big impact in controlling diseases. How does it work? Immunization boosts the body's natural immunity whenever microorganisms enter the body. The body identifies these microorganisms as foreign elements, thus releasing certain kinds of cells to help fight off the infection.Hope this helps!!