However, under certain circumstances, the fishing line may cause certain health risks due to factors such as material, quality and processing. For example, some fishing lines are made of toxic substances such as fluorocarbon, which is very toxic and has been clearly listed as harmful by the United Nations. In addition, the diameter and tension of some fishing lines may be false, which may bring wrong judgment to users and lead to danger when fishing.
To sum up, the fishing line itself is not toxic, but it may be harmful to the human body under certain circumstances, so use it with caution.