1 Spread of the cancer to other parts of the body: Pain caused by cancer itself is more common in people who have metastatic (or advanced) disease, in which the breast cancer spreads to other parts of the body.
Toxicological Effects: 1  Acute toxicity: Atrazine is slightly to moderately toxic to humans and other animals. 2  Chronic toxicity: Some 40% of rats receiving oral doses of 20 mg/kg/day for 6 months died with signs of respiratory distress and paralysis of the limbs.
Health effects from exposure to styrene may involve the central nervous system and include complaints of headache, fatigue, dizziness, confusion, drowsiness, malaise, difficulty in concentrating, and a feeling of intoxication.ealth effects from exposure to styrene may involve the central nervous system and include complaints of headache, fatigue, dizziness, confusion, drowsiness, malaise, difficulty in concentrating, and a feeling of intoxication.