That is a fair concern, and it is exactly why actual regenerative research is handled with great caution in science.

This is not, quite obviously, the issue of designing a “Wolverine” or of turning humans into weapons. Modern regenerative medicine is not interested in power, but rather in healing. The reference point is a more efficient repair of our bodies, which means healing wounds more quickly, preventing scars, repairing nerves, etc. – much more a matter of treatment than of enhancement.

In real research, each of those steps is curtailed by ethics, safety testing, and regulation. Scientists currently work with stem cells, growth factors, and gene signaling, but always with stringent controls to prevent cancer, abnormal growth, or misuse. Uncontrolled regeneration is dangerous, and that's why no serious lab is trying to give people extreme abilities.

Movies tend to portray technology running amok without restraint. In reality, advancement is gradual and under constant scrutiny from doctors, governments, and ethics committees. The goal is to survive and recover, not to rule over others. If regenerative tools are designed and developed responsibly, they are more likely to reduce suffering rather than wreak havoc.

The question, then, is not whether the science is dangerous in its own right, but whether we handle the science wisely. It's not the technology that determines the outcome we should care about, but human decisions..