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Blood

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Your blood is made up of liquid and solids. The liquid part, called plasma, is made of water, salts, and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells, and platelets.

Red blood cells (RBC) deliver oxygen from your lungs to your tissues and organs. White blood cells (WBC) fight infection and are part of your immune system. Platelets help blood to clot when you have a cut or wound. Bone marrow, the spongy material inside your bones, makes new blood cells. Blood cells constantly die and your body makes new ones. Red blood cells live about 120 days, and platelets live about 6 days. Some white blood cells live less than a day, but others live much longer.

There are four blood types: A, B, AB, or O. Also, blood is either Rh-positive or Rh-negative. So if you have type A blood, it's either A positive or A negative. Which type you are is important if you need a blood transfusion. And your Rh factor could be important if you become pregnant - an incompatibility between your type and the baby's could create problems.

Blood tests such as blood count tests help doctors check for certain diseases and conditions. They also help check the function of your organs and show how well treatments are working. Problems with your blood may include bleeding disorders, excessive clotting and platelet disorders. If you lose too much blood, you may need a transfusion.

NIH: National Heart, Lung, and Blood Institute

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Demographic Information - Blood

Following is the demographic information reported by website visitors for Blood. Information below may include patient demographics as well as data for website visitors who might be researching on behalf of patients e.g. parents for small children. The data below may or may not be reflective of the complete patient population demographics for this medicine/health topic.
User gender
51 out of 66 users are male.
Patients
Female15
Male51
Other0
Survey Participants: 66
User age
The most common user is 50+ years old.
Patients
< 214
21-3015
30-409
40-505
50+25
Survey Participants: 58
User reported disease
Users most commonly suffer from High blood pressure.
Patients
High blood pressure15
Back pain4
Obesity4
Diabetes4
Heart attack3
High cholesterol3
Other11
Survey Participants: 44
User exercise frequency
Users most commonly exercise once a week.
Patients
Once a week28
Twice a week7
Five times a week4
Everyday18
Survey Participants: 57
User smoking habit
64 out of 84 users do not smoke.
Patients
Smoke20
Do not smoke64
Survey Participants: 84
User alcohol consumption frequency
Users most commonly reported never consuming alcohol
Patients
Never29
One drink a day1
Two drinks a day6
More than two drinks a day6
Once a week8
Twice a week2
Once a month6
Survey Participants: 58
User body weight
27 out of 66 users report being overweight.
Patients
Overweight27
Not overweight39
Survey Participants: 66
User well-being
21 out of 59 users report having significant pain in the last 3 months.
Patients
Significant pain in the last 3 months21
No significant pain in the last 3 months38
Survey Participants: 59
User profession
The most common user profession is Other.
Patients
Other29
Engineer, IT or Software9
Retired7
Accountant6
Government service4
Student4
Survey Participants: 59

References - Blood

Last updated date

This page was last updated on 10/18/2017.
This page provides information for Blood in English.