The red blood cells bring oxygen to them and the lungs expel the carbon dioxide
<span>Increased aggression or irritability.Changes in attitude/personality.Lethargy.Depression.Sudden changes in a social network.Dramatic changes in habits and/or priorities.Financial problems.<span>Involvement in criminal activity.</span></span>Physical Symptoms:
<span>Bloodshot or glazed eyes.Dilated or constricted pupils.Abrupt weight changes.<span>Bruises, infections, or other physical signs at the drug’s entrance site on the body</span></span>