1 Corinthians 6:19f teaches that our bodies are not our own. Rather, our bodies belong to God. Our bodies are His property, and so we are not permitted to treat or destroy them as we please: v. 19 Don’t you realize that your body is the temple of the Holy Spirit, who lives in you and was given to you by God? You do not belong to yourself, 20 for God bought you with a high price. So you must honor God with your body. (1 Co 6:19-20 NLT)
Not only are we to take care of our bodies and the life contained. We have an obligation to preserve the body and life of other people. Psalm 82:4 even cites an obligation to protect those who are in danger: Psalm 82:4: Rescue the weak and needy; Deliver them out of the hand of the wicked.
Consider also Proverbs 24:11, which indicates we have a duty to preserve the lives of those who are harming themselves: “Rescue those who are unjustly sentenced to die; save them as they stagger to their death” (NLT).