There are more types of nephritis and it is generally recommended that patients with nephritis should avoid foods that are highly irritating (e.g. fennel, garlic), high in sodium (e.g. salted duck eggs, clams), high in potassium (e.g. fava beans, duck meat), high in phosphorus (e.g. dried nori, green beans) and high in protein (e.g. chicken breast, beef). It is important to note that the causes of nephritis are complex and the actual condition of each patient varies, and dietary regimen is only one part of the treatment of the disease, so it is recommended to actively seek medical advice if you are unwell in your daily life. Your doctor will be able to advise you on the appropriate treatment plan for your specific condition and give you sound dietary advice.