Doctor Russell Cecil of Cornell University mentioned four widespread causes of arthritis:
- Marital strife.
- Financial difficulties and depression.
- Loneliness and anxiety.
- Malice and rancor.
A Doctor William Mark Gaungil, while addressing the Federation of American Dentists, remarked:
"Unhappy feelings like anxiety and fear possibly affect the distribution of calcium in the body, and in consequence, can lead to tooth decay."