The
circulatory system, also known as cardiovascular system, is made up of the
heart and blood vessels. It works to transport oxygen and nutrients to all the
organs and tissues in the body while removing carbon dioxide and other waste
products from them.
In
most adult humans, a typical resting heart rate is between 60 to 100 beats per
minute.
Below
are some of the facts about your circulatory system:
High
blood pressure
Blood
pressure is the force that the blood exerts on the walls of the arteries as
your heart pumps.
High
blood pressure (hypertension) is officially diagnosed when your blood pressure
readings are consistently at or above 130 (systolic)/80 (diastolic) mm Hg
according to the American Heart Association. High blood pressure can eventually
damage your heart and blood vessels, as well as other organs like the brain,
kidneys and eyes.
Because
major arteries naturally stiffen with age, doctors may set a slightly higher or
more relaxed target (such as 130 to 150 mm Hg systolic) to prevent side effects
like severe dizziness, low blood pressure upon standing, or dangerous falls for
the elderly.
Heart
attack
A
heart attack happens when the flow of blood to part of the heart is blocked or
when the oxygen demand of the heart exceeds the oxygen supply. When this
happens, that area of the heart cannot get enough oxygen and begins to die or
lose function.
Signs
of a heart attack can include:
- sudden pain or pressure in your chest,
which may spread to your shoulders, arms, or neck
- sweating
- rapid or irregular heartbeat
- shortness of breath
- digestive symptoms, such as upset stomach,
nausea, or vomiting
- dizziness or lightheadedness
- feelings of weakness or fatigue
- fainting
Heart
failure
Heart
failure is when your heart is not pumping blood as efficiently as it should,
meaning your organs and tissues may not be getting enough oxygen or the
pressure in the heart may be too high.
There
are two types of heart failure: systolic or diastolic. Systolic heart failure
is when the heart is not pumping blood efficiently. Diastolic heart failure
occurs when the heart pumps normally but does not relax normally due to
increased stiffness.
Heart
valve problems
Heart
valves help control the flow of blood in your heart. Heart valve problems, such
as leaky or blocked (stenotic) valves, can cause your heart to be less
efficient at pumping blood.
Heart
inflammation
This
can include inflammation of the inner lining of the heart (endocarditis), the
outer sac of the heart (pericarditis), or the heart muscle itself
(myocarditis).
Stroke
A
stroke is when a blood vessel that supplies the brain with oxygen and nutrients
is blocked. When this happens, cells in the brain begin to die off. Because
these cells cannot be replaced, damage to the brain can be permanent unless
blood flow is quickly restored.
Signs
of a stroke include:
- weakness or numbness, particularly on one
side of the body or face
- severe headache
- confusion
- problems with vision
- slurred speech or difficulty talking
- loss of balance, dizziness, or trouble
walking
- seizure
Atherosclerosis
Atherosclerosis
is when plaque builds up along the walls of your arteries. Risk factors that
can contribute to plaque buildup include:
- high blood pressure
- high cholesterol
- tobacco use
- diabetes
- unhealthy diet
- low levels of physical activity
- being overweight or obese
Atherosclerosis
can gradually make the arteries narrower, affecting the amount of blood that
can flow through them. Because of this, organs and tissues may not get enough
oxygen.
When
atherosclerosis affects the arteries of the heart, it is called coronary artery
disease. Other arteries in the body can also be affected as well. This is
called peripheral artery disease, which affects how well blood can flow to your
legs, feet, arms and hands.
In
some cases, an artery may become completely blocked by plaque or a blood clot.
When this happens, a heart attack or stroke can occur.
Angina
Angina
is chest pain that occurs when the heart is not getting enough oxygen. It is
often caused by coronary artery disease, which makes the arteries supplying the
heart narrower due to plaque buildup.
Arrhythmia
An
arrhythmia is an abnormal heart rhythm. When you have an arrhythmia, your heart
may be beating too fast (tachycardia), too slowly (bradycardia), or
irregularly. It happens due to changes in the heart or its electrical signals.
Varicose
veins
The
veins contain valves that help keep oxygen-depleted blood flowing toward the
heart. When these valves fail, blood collects in the veins, which can cause
them to bulge and become swollen or painful.
Varicose
veins most often appear on the lower legs.
Blood
clots
A
blood clot is when blood coagulates or clumps together to form a gel-like mass.
This clot can get stuck in a blood vessel, where it blocks the flow of blood.
Blood clots can cause:
- heart attack
- stroke
- deep vein thrombosis (DVT)
- pulmonary embolism
- Additional conditions
Aneurysm
An
aneurysm is when the wall of an artery becomes weakened and begins to bulge.
This can occur in the big arteries (aortic aneurysm) or the small arteries
(coronary aneurysm). If an aneurysm in a large artery ruptures, it can be
life-threatening.
Congenital
heart disease
This
is when you are born with an abnormality in your heart or blood vessels,
usually related to the formation of the heart muscle.
Vasculitis
This
is inflammation of the walls of your blood vessels and can lead to
complications like aneurysms.
To
keep your circulatory system healthy, you need to
Do
regular cardiovascular exercise
This
is one of the best ways to get your heart pumping and to improve blood flow
throughout your body. It is recommended that you aim for 150 minutes of
moderate-intensity cardio exercise per week.
Eat
heart-healthy foods
Choose
foods like whole grains, fresh fruits and vegetables, and lean protein,
including fish.
Many
fish, such as salmon, tuna, sardines and herring, are rich sources of omega-3
fatty acids. Omega-3 fatty acids can help ward off heart disease.
Almonds,
walnuts, pecans and other tree nuts deliver a powerful punch of heart-healthy
fats, protein, and fiber. Including them in your diet can help lower the risk
of cardiovascular disease.
A
diet rich in soluble fiber can help lower your level of low-density
lipoprotein, or “bad cholesterol.” Sources of soluble fiber include beans,
oats, barley, apples, pears and avocados.
Avoid
foods that are high in sodium (i.e. limit salt intake), saturated fats,
trans fats, added sugars and cholesterol. Slicing saturated fat intake to no
more than 7 percent of your daily calories can cut your risk of heart disease,
In
addition, dark chocolate contains heart-healthy flavonoids. These compounds
help reduce inflammation and lower the risk of heart disease, suggest
scientists in the journal Nutrients.
Maintain
a moderate weight
Carrying
more weight can place more stress on your heart and blood vessels. Research in
the Journal of the American College of Cardiology has linked excess belly fat
to higher blood pressure and unhealthy blood lipid levels.
Manage
stress
High
levels of long-term stress can affect your heart health. Some stress-reducing
options include exercise, meditation, breathing techniques and yoga.
Limit
sitting
Sitting
still for long periods, such as at a desk or on a plane, can restrict blood
flow. Make a point to stand up and move around at least once an hour.
Quit
smoking
Smoking
increases your risk of cardiovascular disease.
See
your doctor regularly
Circulatory
system issues are best treated as early as possible. In some cases, you may not
even know that there is an issue with your heart or blood vessels. Regular
visits to your doctor can help identify and treat any potential problems before
they become more serious issues.