These include other diseases, drug or alcohol use, and pregnancy.

Primary causes of the decline include disease and human interference.

Causes of death included accidents and disease, but none was due to hostile action.

The leading causes of death included cancer, cardiovascular disease, and trauma.

Factors which bring outbreaks to a close include parasitoids and disease.

Medical cases included such diseases as trench foot and gas poisoning.

Causes may include aging, medication side effects, diseases, and eye structure problems.

Other well known causes include diseases of the kidney.

Ecological hypotheses include environmental disaster, epidemic disease, and climate change.

Also, the poem describes problems with society that include crime, prostitution, disease, and other forms of suffering.