The use of stem cells in research and treatment brings up some important ethical questions:

1. Where Stem Cells Come From:

   • Embryonic stem cells can be tricky because it involves creating and potentially destroying embryos.
   • Adult stem cells are less controversial but don't have as many uses.

2. Possible Misuse:

   • There are worries about cloning and changing genes for purposes that aren’t meant to help people.
   • This raises concerns about treating human life like a product.

3. Access for Everyone:

   • New treatments might make health differences between rich and poor even bigger.

4. Rules and Guidelines:

   • There isn't a clear agreement on ethical rules, which makes research harder.

What Can We Do?:
We need to create clear ethical guidelines.
We should also focus on researching stem cells that come from accepted sources to help address these problems.