Fill in the blanks:
1. Malfunctioning of ................. can lead to accumulation of toxic substances in the body.
2. Lack of insulin may lead to .......................
3. A ................... is opposite to health.
4. Intake of inadequate or excess food or unbalanced diet leads to ................
5. Diseases due to infection by microorganisms are called communicable ..................
6. ............... proved that microbes cause diseases
7. Inflammation of joints result in ....................