I'm really worried about my friend who's dealing with a vitamin D deficiency. Can you explain what kind of problems they might face because of this? Also, what treatments are usually recommended for someone to overcome this deficiency?
Vitamin D deficiency can lead to issues like weakened bones (osteoporosis), increased risk of fractures, fatigue, muscle weakness, mood changes, and impaired immune function; treatment typically involves supplements (1,000-2,000 IUday) and increased exposure to sunlight, as well as dietary changes to include vitamin D-rich foods like fatty fish, fortified dairy products, and mushrooms.