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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

Questions - Blood

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
69 out of 88 users are male.
Patients
Female17
Male69
Other2
Survey Participants: 88
User age
The most common user is 50+ years old.
Patients
< 2110
21-3024
30-4012
40-5010
50+31
Survey Participants: 87
User reported disease
Users most commonly suffer from High blood pressure.
Patients
High blood pressure22
Back pain7
Diabetes6
Asthma4
Obesity4
High cholesterol3
Other12
Survey Participants: 58
User exercise frequency
Users most commonly exercise once a week.
Patients
Once a week35
Twice a week8
Five times a week7
Everyday24
Survey Participants: 74
User smoking habit
81 out of 112 users do not smoke.
Patients
Smoke31
Do not smoke81
Survey Participants: 112
User alcohol consumption frequency
Users most commonly reported never consuming alcohol
Patients
Never40
One drink a day1
Two drinks a day7
More than two drinks a day6
Once a week9
Twice a week3
Once a month9
Survey Participants: 75
User body weight
39 out of 89 users report being overweight.
Patients
Overweight39
Not overweight50
Survey Participants: 89
User well-being
32 out of 81 users report having significant pain in the last 3 months.
Patients
Significant pain in the last 3 months32
No significant pain in the last 3 months49
Survey Participants: 81
User profession
The most common user profession is Engineer, IT or Software.
Patients
Engineer, IT or Software11
Retired9
Student9
Accountant7
Government service5
Doctor4
Other37
Survey Participants: 70

Last updated date

This page was last updated on 12/12/2017.
This page provides information for Blood in English.