Scientists Use Light to Destroy Cancer Cells — Without Surgery
What if doctors could target cancer cells with light… and leave healthy tissue untouched?
This is the idea behind photodynamic therapy (PDT) — a treatment gaining renewed attention.
🔬 How It Works
The process involves three steps:
- A light-sensitive drug is injected
- The drug accumulates in cancer cells
- A specific wavelength of light activates it
👉 Once activated, the drug produces toxic molecules that kill the cancer cells.
📊 Recent Developments
New advancements include:
- More precise targeting
- Deeper tissue penetration using near-infrared light
- Reduced damage to surrounding tissue
Researchers are exploring its use in:
- Skin cancer
- Lung cancer
- Esophageal cancer
🎥 Watch How It Works
🧠 Why This Matters
Compared to traditional treatments:
- Minimally invasive
- Can be repeated multiple times
- Fewer systemic side effects
⚠️ Limitations
- Not suitable for all cancers
- Light must reach the tumor
- Often used alongside other treatments
🐦 What Experts Say
“Precision therapies like PDT could reduce the need for aggressive surgery.”
“Combination therapies are the future.”
📚 Sources
- American Cancer Society
- National Institutes of Health
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