Can AD be supplemented in the long term

Vitamin AD is generally not recommended for long-term self supplementation, as excessive intake may lead to poisoning. The supplementation of vitamin AD needs to be comprehensively judged based on factors such as individual deficiency level, age stage, dietary intake, etc. It is usually recommended to use it periodically under the guidance of a doctor. Vitamin AD belongs to fat soluble vitamins, and long-term excessive intake can easily accumulate in the body. Excessive intake of vitamin A may cause adverse reactions such as headaches, dry skin, and liver damage; Excessive vitamin D may lead to problems such as elevated blood calcium and kidney damage. Healthy individuals with a balanced diet typically do not require additional supplementation. Foods such as animal liver, deep-sea fish, and egg yolks can provide natural vitamin AD. Some special populations may require periodic supplementation. When infants and young children are developing, pregnant women are breastfeeding, middle-aged and elderly people are at high risk of osteoporosis, or when there is a vitamin AD deficiency, doctors will develop a supplementary plan based on serum test results. This type of situation requires strict adherence to medical advice to control dosage and cycle, and regular follow-up of blood calcium and liver and kidney function. Adding natural foods rich in vitamin AD to daily diet is safer. It is recommended to consume moderate amounts of salmon, carrots, spinach and other foods every week, combined with daily sun exposure to promote vitamin D synthesis. If there are suspected deficiency symptoms such as decreased night vision and bone pain, medical examination should be sought first before deciding whether to supplement, and avoiding long-term self consumption of vitamin AD preparations.