The phrase "more health-giving" implies something that promotes or enhances one's health. In contrast, antonyms for this phrase would refer to something that is unhealthy or harmful to one's well-being. Words such as damaging, unhealthy, toxic, harmful, and dangerous can all be used as antonyms. These words refer to things that can adversely affect one's physical or mental health, either in the short or long term. When making important health decisions, it is crucial to carefully consider the potential risks and benefits of each option, and to choose those that are more health-giving and less damaging to one's overall well-being.