What is the healthiest water bottle to use: plastic or stainless steel?

Comparing materials shows what is the healthiest water bottle to use:

• Chemical Leaching:
  • Plastic: Releases BPA, phthalates, microplastics
  • Steel: Zero chemical release ever
• Bacterial Growth:
  • Plastic: Harbors millions of bacteria in scratches
  • Steel: Natural antibacterial properties
• Temperature Safety:
  • Plastic: Heat increases chemical leaching 10x
  • Steel: Stable at all temperatures
• Long-term Health:
  • Plastic: Degrades, increasing health risks
  • Steel: Maintains safety permanently

Science clearly shows what is the healthiest water bottle to use: medical-grade stainless steel.