 |
When cells
become damaged and grow without stopping it is called _______________. |
 |
Heavy drug users
develop ____________________ because of weak immune systems. |
 |
Smoking
cigarettes reduces oxygen to the heart and can cause a
___________________. |
 |
When
lung cells burn out from cigarette smoke a person gets
______________________. |
 |
Alcohol can
weaken the brain's blood vessels and cause a _____________________. |
 |
Since all drugs
speed damage to the brain there is risk of early ____________________. |
 |
Sleeping late
and being tired all day is a sign of serious ___________________. |
 |
70% of the
human _______________ must be damaged before health problems begin. |