Vitamin D₂ can mainly increase the concentration of blood calcium and blood phosphorus in the body. When vitamin D₂ deficiency is caused by various reasons, it can trigger calcium and phosphorus metabolism disorders in the body, and symptoms such as bone softening, muscle pain, and muscle spasms can occur. 1. Rickets: mainly occurs in childhood, due to the long-term lack of vitamin D₂, can lead to soft bones, easy to deform, resulting in X-shaped legs, O-shaped legs, and even chicken chest. 2. Osteochondrosis: It mainly occurs in middle-aged people, mainly pregnant and multiparous women, as well as frail elderly people, when vitamin D₂ deficiency occurs. Early patients may experience symptoms such as fatigue, loss of physical strength, and muscle aches and pains. In severe cases, tooth loss and bone pain may occur, and even some patients induce osteoporosis due to the decrease of bone density in the body, which is prone to fracture. 3. Tetany: If it is due to the lack of vitamin D₂, the calcium ion concentration in the body decreases, resulting in increased muscle nerve excitability, prone to muscle spasms and other symptoms, and can be accompanied by twitching, laryngeal spasms and other symptoms. In addition, in daily life, also pay attention to participate in more outdoor activities, more sunshine. Also don’t be picky about what you eat. You can eat more eggs, fish and shrimp, which will help supplement vitamin D₂. When vitamin D₂ deficiency occurs, seek medical attention promptly.