Human body is a complex machine that should be serviced and maintained. Learn how to recognize the signs your body sends you. We have covered 10 signs that indicate a possible health problem and a condition that you should not ignore.

1. Gray hair before the 40s

Graying is a natural phenomenon and it is often a matter of genetics. But, if your hair is 50 percent gray and you are in your 30s, you are possibly dealing with diabetes. Check if there are similar cases in your family history.

2. Birthmarks

Most moles are harmless and benign, but some of them can be pretty dangerous, especially those that appear as a result to overexposure to sun. Senile and actinic keratosis triggered by sun and UV rays are considered as pre-cancer skin changes.

3. Eye white

Your white should be always white. Simple as that. Apart from insufficient sleep and colds, your eye white can detect severe problems in your body. Yellow white may indicate jaundice, liver or gall bladder issues. Red white may be a sign of hypertension or viral disease, like conjunctivitis.

4. Chapped lips

These are triggered by temperature changes and wind. But, if your lip ends are often cracked and you have inner sores, you probably lack vitamin B and zinc. This is a common sign of fungal infections as well.

5. Swollen neck

If your neck is swollen consult your doctor as soon as possible. Pay special attention to the front part of your neck, because it may indicate thyroid problems that are especially common in women aged between 20 and 50.

6. Loss of eyebrows

Eyebrows become less frequent as you grow old, but sudden hair loss may indicate thyroid problems, hyperthyroidism or an overactive thyroid, or hypothyroidism or poor thyroid function. These issues are often accompanied by hair loss.

7. Cracked lips & Cold sore (herpes simplex virus)

Cracks at the corners of your mouth are sometimes caused by a shortage of B vitamins or zinc. With long-term cracks, a fungal infection may set in. Treatments for oral thrush may help.

The appearance of cold sore may often indicate that you are experiencing some stress. Namely, stress is linked to emotions, but it also weakens the immune system, as well as an opportunity for the cold sore to appear. Therefore, try to avoid tension and anxiety, and find a way to relax.

8. Nail changes

Nails can really tell you much about your health and the causes of their changes vary.

9. Cold feet

Feet are the farthest part from your heart and any cardiovascular disease is first manifested in this part of your body. Reynald’s disease is an autoimmune condition that tightens vessels in hands, toes, nose and ears, which is why they are often cold, pale or numb.

10. Red faces

Sudden changes in face are common in women aged between 30 and 55. They are caused by hormonal changes, temperature changes and hot food. Rosy cheeks are often a sign of rosacea, a chronic skin disease that affects women. The cause of this disease is still unknown.