Research one specific disease resulting from a lack or excess of vitamins or minerals. Explain how and why the disease develops.

Research one specific disease resulting from a lack or
excess of vitamins or minerals.
Explain how and why the disease develops.
Ideally report a disease that no one else has reported so far so we can have a good variety in our weekly discussion.
Tell the class:
1) What is the disease ?
2) What is the prevalence ?
2) What are causes and/or risk factors ?
3) Who is at risk ?
4) Signs & Symptoms ?
5) Diagnosis methods and specific treatments ?
6) Prevention
7) Anything else relevant