1. The man, David Mitchener, had extremely high levels of vitamin D in his blood when he was hospitalized.

 2. The high vitamin D intake caused hypercalcemia, a buildup of calcium in the body, which contributed to his death.

 3. The packaging of the supplements Mr. Mitchener took did not contain any warnings about the dangers of excessive intake.

 4. The coroner investigating the case is urging authorities to mandate clear warnings on supplement packaging about the risks of overconsumption.

 5. Vitamin D supplements can be harmful when taken in excess, leading to potentially serious health risks.

 6. Medical experts recommend adults maintain a vitamin D level of 30.

 7. The recommended daily intake of vitamin D for most adults is 600 international units (IU).

 8. Taking more than the recommended amount of vitamin D can cause various symptoms, including nausea, vomiting, and kidney problems.

 9. While high vitamin D levels were a significant factor, Mr. Mitchener also had other contributing health conditions.

 10. Before taking any supplements, it's crucial to consult a doctor to determine the appropriate dosage based on individual needs and health status.