You think cancer drugs fail because they’re not strong enough.

That’s not the problem.

The problem is… they don’t go where you think they go.

We assume a drug enters the body, reaches the tumor, and does its job. Clean. Direct. Controlled.

It’s not.

A research team led by Louise Fets at the MRC Laboratory of Medical Sciences (LMS) just showed something most people never consider: Inside cancer cells, drugs don’t spread evenly. They get trapped.

Specifically, inside structures called lysosomes.

And once they’re trapped, they don’t behave like drugs anymore.

They behave like reservoirs.

Slow-release pockets. Uneven distribution. Different cells getting different doses at different times.

Which means: Two patients can get the exact same drug… And experience completely different outcomes. Not because the drug failed. But because the distribution failed.

This study used advanced imaging on tumor samples to map exactly where these drugs go.

And what they found breaks the current assumption of precision treatment.

We’re not delivering drugs as precisely as we think.

We’re guessing.

And sometimes, we’re getting lucky.

Zoom out.

This changes the problem statement.

It’s no longer: “How do we make stronger drugs?”

It’s: “How do we control where drugs actually end up inside the body?”

Because if the drug is in the wrong place…

It doesn’t matter how powerful it is.

This is where cancer treatment quietly shifts.

From chemistry… To distribution.

And once you see that

You realize we’re not just fighting cancer.

We’re fighting physics inside the human body.