- The Supreme Court, in the K.S. Puttaswamy v. Union of India case (2017), declared the right to privacy to be a fundamental right guaranteed by Article 21 (Right to Life and Personal Liberty). - IPC Section 377 This section criminalized 'unnatural offences', including consensual same-sex relations. The right to privacy judgment strongly emphasized the importance of personal autonomy, dignity, and the right to make choices about one's identity and sexuality within the private sphere. This judgment provided a crucial constitutional basis for challenging Section 377 regarding consensual acts, which was subsequently decriminalized by the Supreme Court in Navtej Singh Johar v. Union of India (2018), explicitly relying on the principles of privacy, autonomy, and dignity established in the Puttaswamy case. - Euthanasia While the recognition of passive euthanasia with guidelines was established prior to the Puttaswamy judgment under Article 21 (Right to Life with Dignity, including the right to die with dignity), the expanded understanding of personal autonomy and decisional privacy flowing from the privacy judgment reinforces the individual's right to make informed choices about their body and medical treatment, including end-of-life decisions. The privacy judgment's emphasis on bodily integrity and decisional autonomy is relevant to the discourse on euthanasia.