5. People need plenty of sun exposure to avoid vitamin D deficiency.
False:
On days when UV levels are high, most people get enough Vitamin D through normal activity, even with sun protection. In summer, a few minutes of sun exposure outside peak UV periods provides adequate vitamin D. During winter, 2-3 hours of sun exposure spread throughout the week is sufficient for vitamin D in southern states. When UV levels are 3 or above, sun protection is still needed.