17 Telltale Signs You Might Have Cancer

If you think you might have cancer, don't rely on hearsay or information you read on the internet. Get to the doctor! But if you're just trying to bolster your knowledge and plan ahead, knowing exactly what to expect before a cancer diagnosis could help you catch it early. Early detection is crucial for improving your chances at effective treatment.

Most people's knowledge surrounding cancer is a little hazy. Certain foods that everyone thinks cause cancer actually don't, while other dietary interventions have proven more effective at preventing the disease. One of the best ways to stave off cancer is to live an active, balanced lifestyle. You may also want to refrain from overdoing it on foods that have been linked to cancer.

To better inform you about the warning signs to look out for, we turned to the experts. The American Cancer Society has an in-depth list of cancer's warning signs on its website. We browsed this page and others in their database to ensure you can detect these 17 telltale signs you might have cancer as early as you can.

Internal bleeding that's more than just a bruise is a sign worthy of enough concern to warrant a doctor's visit. A violent cough that eventually turns into coughing up blood is a warning sign of lung cancer.

Internal and excessive bleeding are signs that something is off with your platelets and red blood cells. Leukemia could be to blame. However, a low platelet count from some other medical cause could be the culprit. Consult your doctor and ask for a blood test if you are concerned and the bruises persist.

Migraines and headaches are quite common and can arise from a myriad of sources. Are you dehydrated? Are you getting enough sleep? Prioritize these aspects of your well-being and see if anything changes. If not, and if the headaches worsen to the point where they are unbearable, it's possible that a brain tumor is to blame.

Most people with cancer experience weight loss at some point in the duration of the disease. Regardless of dietary or fitness habits, they lose weight due to the cancer itself — this symptom is referred to as "unexplained weight loss." If a person loses a large amount of weight in a short period of time, it may be an early sign of cancer.

The American Cancer Society advises anyone who notices a visible change in a wart or mole to consult a doctor right away. In many cases, the skin blemish is benign, but it could be cancerous. Early detection of melanoma dramatically increases your chances of effective treatment. To prevent skin cancer, make sure to always wear sunscreen (even on ocassions when you think you don't need it). 

The American Cancer Society explains that nausea and vomiting are often side effects of cancer treatment; but many people might not know that they're often symptoms of the cancer before it's detected, as well. Especially if the cancer is affecting the brain, nausea and indigestion might occur.

Some skin cancers bleed and end up looking like sores that refuse to heal. If the sore is in your mouth, particularly if you smoke cigarettes or drink heavily, you should consult your doctor immediately. This could be an early sign of oral cancer.

Whether you're experiencing constipation, diarrhea, frequent urination or another irregularity, these symptoms could indicate bladder cancer or colon cancer. That being said, there are many other dietary and situational factors that can impact your bowel movements and bladder. Report these changes to your doctor.