For most people it is safe to donate blood. People must also be screened prior to any donation to make sure they are not on certain medications or have certain diseases. Collection sites have an obligation to refuse any candidates if they fail to meet minimum qualifications.
No...you should not donate blood if you are tachycardic. Most blood banks will not allow you to donate blood if you heart rate is over 100. Some people with SVT can have a seizure if they donate blood. This is a question you need to have answered by your cardiologist.
No. Someone who has B blood can only donate to someone with AB blood and B blood. Someone with O blood can only take O blood.
It is important for people of all blood types to donate blood. Blood donation is an easy way to save another persns life. Some blood types are more rare than others. People with AB blood type should donate, because their is a shortage of blood available.
The global answer is no, you can't donate blood for at least 6 months, in some places you cant donate for up to a year post piercing.
In theory, type O blood is the universal donor. It can donate to A, B, or AB. In reality, things are more complicated, and you can't really say what type of blood O can donate to, not without doing some lab tests on the specific blood (donor and recipient both).
If your question is how is blood produced, the answer is that it is produced in the bone marrow, inside your bones. This is why people can donate blood and restore the lost blood after some time.
No, you do not have to fast to donate blood. You actually need to be sure and eat some carbs, sugars,and proteins prior to to prevent passing out.
If you need blood, people donate their own blood. If you really need some blood the doctors collect the donations and give you the other persons blood.
You would have to wait until your symptoms have cleared before you can donate blood. Even if a cold is not a major illness, blood centers wait until the individual is perfectly healthy to donate as blood is a very delicate and perishable fluid. Most blood centers will have guidelines that help determine if an individual is eligible to donate blood.
4 Months... Some blood donor groups recommend a year.
You can still donate blood if you're on an antidepressant.
yes it is in fact about 9% of people in the world have this blood type. So you should donate some time