Here are some articles related to vitamin D and sunlight:
- How Much Sunlight Do You Need for Healthy Vitamin D Levels? Verywell Health
- Your questions answered on vitamin D, food safety and garden produce The Seattle Times
- Vitamin D isn’t really a vitamin: Here’s why Dayton Daily News
- Sun Exposure During Summer Not Enough To Maintain Vitamin D Levels: Study NDTV
- Low Vitamin D Persists Year-Round in Northern Britain Conexiant
