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www.reference.com/article/early-warning-signs-heart-disease-5ef2bb08caf08119

The early warning signs of heart disease depend on the type of heart condition a person has, as stated by Mayo Clinic. One of the most common warning signs in all heart diseases is chest pain, medically referred to as angina. Other common symptoms of heart disease include shortness of breath, swelli

www.reference.com/article/causes-global-warning-4f78eb276b29be79

Global warming is caused by an abundance of carbon dioxide in the Earth's atmosphere. The higher levels of carbon dioxide act the same as a blanket, keeping heat in and essentially warming up the temperature of the Earth. Carbon dioxide survives in the atmosphere for a long period of time.

www.reference.com/world-view/warning-signs-cancer-ef93d530aca9497c

According to the American Cancer Society, generalized signs and symptoms of cancer include unexplained weight loss, fever, fatigue, unexplained pain, skin changes, changes in bowel or bladder functions, wounds that do not heal, unusual bleeding and white patches inside the mouth. All of these signs

www.reference.com/article/early-warning-signs-cancer-85f20c97e19827e7

Changes in bladder or bowel habits, unusual bleeding or discharge, coughing that doesn’t stop, and sores that don’t heal are some of the early warning signs of cancer, explains WebMD. Patients experiencing these symptoms longer than two weeks independent of another diagnosed condition should consult

www.reference.com/article/common-heart-problem-warning-signs-c732f36f964f5b96

Common signs that may indicate a heart problem include chest or arm discomfort, shortness of breath, fatigue, abnormal heartbeats and loss of consciousness. Discomfort or pain in the chest is a classic symptom of heart attack, according to WebMD.

www.reference.com/world-view/10-warning-signs-heart-attack-e77bcc0ec7de5f28

Warning signs for a heart attack include discomfort in the chest and upper body, shortness of breath, nausea, lightheadness and cold sweats, according to the American Heart Association. Upper body discomfort may occur in the jaw, back, arms, neck or stomach.

www.reference.com/article/early-warning-signs-heart-attack-c2a928f15911b4ac

Unusual fatigue, mood changes, digestive changes and shortness of breath can all be early signs of a heart attack, according to WebMD. These signs especially might indicate a heart attack if they are unexplained or get worse over time.

www.reference.com/pets-animals/warning-signs-dying-dog-6adc4fff187fd066

Warning signs that a dog is dying include lack of coordination, severe tiredness, loss of appetite, incontinence and general confusion, according to Best Pet Insurance. These signs are important to note if the owner is interested in making the decision to have the dog euthanized before the dog's con

www.reference.com/article/warning-signs-poisoning-cat-8f09bcdb87a95ac6

Signs of feline poisoning include gastrointestinal symptoms such as vomiting, diarrhea, drooling, nausea and lack of appetite, according to the Pet Poison Hotline. The cat may also exhibit signs of internal bleeding, such as coughing up or vomiting blood, weakness, lethargy, racing heartbeat or pale

www.reference.com/article/major-warning-signs-depression-54ae385eee73fbef

Some major warning signs of depression include fatigue and decreased energy, overeating or loss of appetite, feelings of guilt or worthlessness, persistent sad thoughts and feelings of guilt, states WebMD. Additional warning signs include difficulty concentrating or remembering details, insomnia or