Can patients with chronic nephritis consume Codonopsis root (Dang Shen)?

Patients with chronic nephritis may consume *Codonopsis pilosula* (Dangshen). The primary constituents of *Codonopsis pilosula* are starch and glucose, and it contains no components harmful to the kidneys; therefore, it is safe for patients with chronic nephritis to consume. The key dietary considerations for these patients involve controlling sodium (salt) and protein intake. Excessive salt consumption can exacerbate edema and further elevate blood pressure, potentially leading to heart failure or cerebrovascular accidents—such as intracerebral hemorrhage. Thus, daily salt intake should be restricted to no more than 3 grams—approximately the amount that fits in half a beer bottle cap—and processed or pickled foods (e.g., preserved vegetables) should also be limited.

Secondly, high-protein foods—including eggs, duck eggs, lean meats, fish, and soy products—must also be restricted. Overconsumption of such foods increases urinary protein loss and may accelerate deterioration of renal function; therefore, their intake must be carefully controlled. Aside from these restrictions, most other foods may be consumed in moderation. For instance, *Codonopsis pilosula*, which is rich in starch and carbohydrates, is safe for consumption.