Why would a utilitarian support the idea of informed consent?

Question

In a clinical setting, not a research setting if that matters. Also, why would informed consent be appropriate according to the Kantian theory? Please help me out!

Answer 1

1) The idea that informing patients being the greater good for the greatest number of people is the only way a utilitarian could support the idea. It would be necessary that uniformed patients, practicing physician, or the public in general suffer or pay a higher price than when patients are uninformed, and that must occur in a higher percentage than when patients are informed in order to gain utilitarian support.

You can expound on that.

2) Kantian theory states that not all consequences justify the means; therefore, we can assess that consent to medical procedures may be a right that must be given in accordance to the categorical imperative ~ a universal right to choose or refuse medical treatment.

Answer 2

Knowledge offers possibility of higher pleasure. Ignorance may be a bliss, but it won't lead to true happiness, as defined by utilitarian theory.
I don't quite understand why one would think otherwise.