Fourteen signs of vitamin D deficiency include: Aching muscles: They can be a sign of vitamin D deficiency because this nutrient is essential for keeping your muscles healthy. Without vitamin D, your muscles … · If you don't get enough vitamin D, it can take weeks, months, or even longer to develop symptoms. The effects of vitamin D deficiency vary with age and impact bone development, bone … Both hypocalcemia and hyperparathyroidism, if severe, can cause symptoms, including muscle weakness and cramps, fatigue and depression. · Signs of vitamin D deficiency include fatigue, bone loss, and weight gain. Vitamin D is essential for calcium absorption and immune, nerve, and muscle systems. · Symptoms of vitamin D deficiency may include fatigue, frequent illness, anxiety, bone pain, and slower wound healing, among others. Treatments may include dietary changes or taking … · Symptoms of Vitamin D deficiency may not occur for several months or years. Some of the common symptoms may include fatigue and tiredness, bone and muscle pain, loss of appetite, hair loss. … · Vitamin D deficiency symptoms can vary from subtle to severe and often develop gradually. Early signs include fatigue, bone or back pain, muscle weakness or cramps, frequent illness, and hair loss. · Fatigue, body pain, and low immunity may be signs of low vitamin D. Learn how to spot symptoms and when to seek medical help. · This article explores the signs and symptoms of a vitamin D deficiency, as well as possible complications, treatments, and when to see a doctor. · As vitamin D supports muscle function, vitamin D deficiency can increase the likelihood of experiencing symptoms such as muscle loss (atrophy), weakness and pain.