I want to write a 200-page book about "the negative effects of adding fluoride to urban and drinking water of people in different parts of the world". In this case, I have the following information. Please give me a table of contents containing 7 chapters and each chapter containing 30 items in a list.
These are the things I know about the subject of this book. Take these as basic information and add whatever you know with your own information to reach the table of contents of a scientific book:
"There is evidence to suggest that the addition of fluoride to city water can lead to an increased risk of certain health problems, such as skeletal fluorosis, dental fluorosis, and thyroid problems. Studies have also suggested that adding fluoride to city water can lead to an increase in kidney, bladder, and prostate cancers, as well as an increase in cardiovascular disease. Additionally, there is evidence that suggests that the addition of fluoride to city water can lead to an increased risk of cognitive decline in children.
It is important to note that while there have been studies that suggest a link between fluoride and certain health problems, the majority of scientific evidence supports the benefits of water fluoridation in preventing tooth decay and improving oral health.

Skeletal fluorosis and dental fluorosis are conditions that can occur when there is excessive exposure to fluoride, typically from sources other than community water fluoridation. In areas where the natural fluoride levels in the water are high or where there is excess exposure to fluoride from other sources, steps are taken to reduce fluoride exposure to safe levels.

There is limited and conflicting evidence regarding the potential link between fluoride and thyroid problems, and further research is needed to clarify this relationship.

Regarding cancer, the vast majority of studies have found no significant association between water fluoridation and an increased risk of kidney, bladder, or prostate cancers. A recent review of the available evidence by the National Toxicology Program found no clear link between fluoride and cancer.

While some studies have suggested a link between fluoride exposure and cognitive decline, the evidence is not conclusive, and there are many factors that can affect cognitive development in children. The American Dental Association, the Centers for Disease Control and Prevention, and other leading health organizations continue to support the safe and effective use of water fluoridation as a public health measure to prevent tooth decay.
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