2. Cicada is also rich in potassium ions, but the content of sodium ions is relatively low. It is a typical food with high potassium and low sodium, which helps to stabilize blood pressure and is very suitable for patients with hypertension. Cicada also contains a high content of calcium, which can be supplemented by regular consumption, which is helpful to promote human growth and development and may also prevent osteoporosis in the elderly. Chitin in cicada has antioxidant effect and can delay the aging of skin and organs.