Cancer

What is Cancer?

Cancer - is a disease in which cells grow & divides uncontrollably, damaging the parts of the body around them

there are more than 100 types of cancer

can occur in any part of the body

lung cancer is most deadly

How Cancer Begins

Mutation - a change in gene or chromosome

Damage to DNA causes cancer

cancer begins when mutations disrupt the normal cell cycle, causing cells to divide in an uncontrolled way

Tumor - a mass of abnormal cells that develop when cancerous cells divide and grow uncontrollably

How Cancer Spreads

some of the cancerous cells may break off the tumor and enter the bloodstream

Treating & Preventing Cancer

Treating Cancer

surgery, radiation, chemotherapy/drugs

Radiation - high energy beams that target rapidly dividing cells

Chemotherapy - is the use of drugs to treat a disease, these drugs kill cancer cells/slow their growth

if scientists can discover how the cell cycle is controlled they may find ways to sop cancer cells from multiplying

Preventing Cancer

people can reduce their chances of developing cancer by avoiding smoking, eating a healthful diet, and protecting their skin from bright sunlight

eat fruits and vegetables can help lower your risk for some types of cancer

wear sunscreen

smoking, diet, sunlight can increase your risks of developing cancer

Science & Society

Why Does Drug Approval Take So Long?

new medicines/devices undergo extensive testing

the FDA balances 2 needs

sick people need to have the best treatments available including promising new drugs

patients need to be protected from drugs that do not work or are harmful

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