Final answer:
Improper filing, injuries, or harsh chemicals can cause health problems such as fatigue, slowed growth, and digestive issues.
Step-by-step explanation:
Improper filing, injuries, or harsh chemicals could be causes of:
- Swallowing (ingestion): This can happen when chemicals have spilled or settled onto food, beverages, cigarettes, beards, or hands.
- Skin or eye contact: Getting chemicals on the skin, or in the eyes. They can damage the skin, or be absorbed through the skin into the bloodstream.
- There are several household products that contain chemical substances which are considered highly reactive and thus are very dangerous upon ingestion or skin contact.
These factors can lead to various health issues such as fatigue, slowed growth, digestive problems, light sensitivity, and epithelial problems like cracks in the corners of the mouth.