Discuss the impact of chemicals on human health through a case-study other than those mentioned in the text.

A case study was conducted regarding the impact of pesticides to farmers. 
The study believed that the usage of pesticides has some grave effects to the environment and human health. The study was conducted on farmers in living in a confidential province in India. A sample of 100 farmers were taken during the study only 18% of the farmers use protective gear while spraying pesticides. The rest of the 80% had shown illnesses and different types of health problems such as eye irritation, vomiting, and dizziness.

Nail fungus, which can cause the nails to crack, peel and change color and texture.

That’s what i was going to say.