Do people in jail lose their human rights?

From what I understand of what I just read on prisoner's rights, there are some that cannot be denied, proper nutritional food and water, medical and dental care, religious practices and material that do not promote violence or disobedience to the law, and the right to due process of the law as long as the case is not frivolous These may not be all of a prisoner's rights but access to that information can be obtained easily at any library. I do know that what we believe as our inalienable rights, which are given to all citizens of the United States are not afforded to prisoners. That is because the prisoner loses those rights when convicted and as long as he/she is incarcerated. That is as it should be. All prisoners should be treated humanely and have their basic needs to sustain descent health and nutrition met, everything else given to them is lagniappe, as we Louisianans say ( a little extra). I am not a lawyer. All of this information and more can be easily found on the Internet