According to the American Cancer Society, approximately 1,685,210 new cancer cases were diagnosed in 2016 alone. This is a staggering number that highlights the importance of early detection and treatment of cancer.

Knowing the 10 signs of cancer can help you identify the disease before it’s too late. Here are the top signs to look out for:.

1. Unexplained Weight Loss

If you are losing weight without trying, it could be a warning sign of cancer. Unexplained weight loss could be a sign of several different types of cancer, including lung, pancreatic, stomach or colon cancer.

If you have lost 10 pounds or more without changing your diet or exercise habits, it’s time to see a doctor.

2. Persistent Fatigue

Feeling tired or lethargic for no apparent reason is another sign of cancer. Cancer cells use up your body’s energy, leading to fatigue and weakness.

If you feel extreme tiredness that is not relieved by rest, it’s time to speak with a doctor.

3. Change in Bowel Movements

If you are experiencing persistent diarrhea or constipation, it could be a sign of colon cancer. Blood in your stool can also be a warning sign of the disease. If you notice any of these symptoms, don’t hesitate to seek medical advice.

4. Persistent Pain

Unexplained pain that lasts for several weeks could be a sign of cancer. Pain that doesn’t respond to treatment or gets worse should be a cause for concern. This could be a sign of bone or testicular cancer, for example.

5. Skin Changes

If you notice any changes in the size, color or shape of moles or freckles, it’s important to have them checked by a doctor. Skin cancers such as melanoma can grow quickly and spread to other parts of the body if left untreated.

6. Difficulty Swallowing

If you have trouble swallowing and feel a lump or pain in your throat, it could be a sign of esophageal cancer. This type of cancer may also cause heartburn, hoarseness or chronic coughing.

7. Chronic Cough

A cough that lasts for more than three weeks may be a sign of lung cancer. A persistent cough may also be accompanied by chest pain or shortness of breath. Smokers are at a higher risk of developing lung cancer and should be vigilant for any symptoms.

8. Abnormal Bleeding

If you experience any abnormal bleeding, such as between periods, after sex, or after menopause, it could be a warning sign of uterine or cervical cancer. Blood in your urine or stool could also be a sign of bladder or colon cancer.

If you experience any of these symptoms, it’s important to see a doctor right away.

9. Swelling or Lumps

Feeling a lump or swelling in your breast, testicle, lymph nodes, or other parts of your body could be a warning sign of cancer.

It’s important to check your body regularly for any unusual changes and to speak with a doctor if you notice anything out of the ordinary.

10. Changes in Appearance or Behavior

Cancer can affect your body’s hormones and lead to changes in your appearance or behavior.

For example, men with prostate cancer may experience erectile dysfunction, while women with ovarian cancer may gain weight or experience abnormal hair growth. If you notice any changes in your body that are not related to diet or exercise, it’s important to seek medical advice.

Early detection is key when it comes to cancer. If you notice any of these warning signs, don’t hesitate to speak with your doctor. A timely diagnosis and treatment plan could save your life.