My possible heart disease makes sense actually. My mom has it and from what I have been told that it is genetical..
I do move around the house, sometimes I make myself run from couch to my tank and I'm out of breath..
Some heart disease is genetic but stress, diet and lack of exercise are major factors that cause heart disease. Smoking and alcohol also contribute to heart disease.
Your symptoms (shortness of breath after just moving short distances, pain in the teeth/ jaw, chest pain, sore cold legs, etc) are all symptoms of heart problems and should be checked by a doctor ASAP. You should also consult a dentist to make sure there is nothing weird in your mouth/ jaw.
The doctor will listen to your heart and lungs and check your blood pressure. Then probably send you off for an ECG (monitor your heart beat for a few minutes). They should also send you off for an ECG Stress Test, where they do an ultrasound of your heart while resting, then get you to walk on a tread mill or use an exercise bike, then do another ultra sound of your heart.
They have equipment and professionals in the room when you do this just in case you have a heart attack. But these tests will either rule out heart disease, or tell your doctor what is wrong with your heart.
If your heart is really bad, the doctor will probably put you on 100mg of Aspirin per day, and a Beta Blocker. The Aspirin will thin your blood a bit and make it less likely to clot and cause a heart attack. The Beta Blocker will reduce your blood pressure and reduce the amount of oxygen your heart needs so your heart suffers less damage if you do have a heart attack.
Your doctor should also put you on a low GI (Glycemic Index) diet that has mainly low fat meat and vegetables, and contains very little flour or sugar. This is the type of diet that diabetics eat and is a good way to help your overall health, as well as help with heart disease and diabetes, which go hand in hand with each other.
They will probably tell you to go for a short walk every day. Rest when you get tired, then try to walk some more.
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I have a bad heart that runs in my family. My grandfather (died from a heart attack), and my aunty and I have the same bad heart. The main issue is a leaky valve which means I get tired quickly, however it also makes the heart more susceptible to other problems.
I caught a couple of mosquito borne viruses in 2000 & 2002 that damaged my heart. I was poisoned in 2006 and lost most of my family and friends around the same time. I suffered a huge amount of stress and had a number of heart attacks and that did a lot of damage to my heart. I also had a heart attack while living on the street in 2016 and wasn't on medication because it had been stolen, and I couldn't get any help. My heart has been permanently damaged by that and my life has been shortened because of that.
I have been on heart medication since 2006 and had 5 heart attacks and 2 strokes.
As long as I eat right and exercise each day, I will live like this until I die.
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I try to walk for at least 1 hour each day. That is hard now due to covid19 and I normally go for a walk late at night or early in the morning so there are fewer people outside.
I have a bicycle on an indoor trainer and when I use that for 30 minutes in the morning, it makes a huge difference to how I feel physically and mentally.
I take 300mg of Co Enzyme Q10 each day to help repair damage in my heart.
I am on Aspirin and a Beta Blocker and used to have nitroglycerine in my fridge to take if I have a heart attack. I don't have a fridge now so no nitroglycerine. Nitroglycerine is used in an emergency heart attack to dilate the blood vessels and allows the cells to carry more oxygen to the heart. It also causes a bad headache but the headache is nothing compared to the chest pain and freaking out while you die from a heart attack.
I try to eat meat and vegetables as my main meals and avoid grains, flours and sugars where possible. This doesn't mean I avoid them completely, I do occasionally splurge, but most of the food I eat is meat and veg.
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You can live with heart disease and you can even reverse it. But you need to work with your doctor, do regular exercise to work the heart muscle, eat right and take medications prescribed by your doctor.
On the subject of medication, if you do have heart disease and your doctor wants to put you on astatin or statin type medications to reduce your cholesterol, tell them no. These medications do reduce your cholesterol but they also damage your liver and you might have a low cholesterol level but you can die from liver failure. A well balanced diet that is low in saturated fats, sugars and flour, will help more than statin/ astatin medications and make a big difference to your health.