One's environment and genetic make up determine the risk of getting communicable diseases. If one lives in an environment with poor hygiene, poor ventilation and no medical personnel to treat, the chances of getting communicable diseases are higher. Coupled with that the genetic make up of an individual also determines the susceptibility. Genetic make up controls the production of antibodies to fight against both communicable and non communicable diseases. For non communicable diseases the family history of such occurrence is a predisposing factor to likelihood of reoccurring
The severity of illness one is susceptible to is very appreciable. Assuming one is susceptible to asthma on exposure to dust, on exposure to dust for such individual the symptoms that follow are very severe
To protect oneself against diseases one must take care of the modifiable factors such as environment, lifestyle and habits
Yes, if people have addiction history in their lives or their family history they should not be able to purchase large amounts of these products. Tobacco should have more restrictions against 18 year olds, even though they cannot legally purchase it many still do.
