A compensatory drop in insulin secretion might have been expected to accompany the increased sensitivity, because of the inverse (hyperbolic) relationship between insulin secretion and sensitivity.

poles = sp.solveset(1 / Xz, z, domain=sp.S.Complexes) # Convert to numpy arrays for plotting # Ensure that we filter out complex infinity poles and zeros zeros = np.array([complex(z) for z in zeros if ...