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How long does it take to restore blood levels?

How long will it take my body to replenish my lost blood? The blood volume is typically replaced within 24 hours. Red blood cells take between four to six weeks for complete replacement, which is why the FDA requires an eight-week wait between blood donations.

massgeneral.org - Frequently Asked Questions About Donating Blood
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How much blood is taken during a blood donation?

A little less than one pint of blood is taken for each whole blood donation.

How much blood is in my body?

The average adult has between 9-12 pints of blood, depending on the person’s weight.

How long will it take my body to replenish my lost blood?

The blood volume is typically replaced within 24 hours. Red blood cells take between four to six weeks for complete replacement, which is why the FDA requires an eight-week wait between blood donations. Your body will not be affected adversely by the loss of the pint of blood.

How will I feel after donating blood?

Regular activities can generally be resumed right away. After donation you are invited to have some juice and snacks to help replace the volume and to give you a bit of time to relax.

Why should I give blood? Aren’t there plenty of people who do that?

There is a need for new blood every day. Less than 5 % of the eligible population donates. However, more than 90 % of the population will need blood in their lifetime.

Who uses my blood?

Your donated blood could go to a newborn just fighting to stay alive, a young child battling leukemia, a teen in a car accident, a young man with anemia, a middle-aged woman with a bleeding ulcer or an elderly person having cardiac surgery. You never know who might get your blood, but know that your blood will always be used to help someone in need.

What happens to my blood after I donate?

Your donation will be typed and tested for 10 infectious diseases. Once the blood passes all of the tests, it will be broken down into its components (red blood cells, plasma and platelets).

Does it hurt to donate blood?

The main obstacle to donating blood is worrying about how it will feel. You will feel only a slight pinch at first and then nothing.

How long does donating blood take?

If you schedule an appointment, the entire process will take about 30-40 minutes (for whole blood donations). The actual donation takes about five to seven minutes.

What is the most needed type of blood?

All types of blood are needed. Type O is the most common blood type and is the most widely used and needed. Type O can safely be transfused to all other types and is frequently used in emergencies. It’s best, however, to use a patient’s specific blood type for transfusions.

Why should I donate blood?

The answer is simple – you could save someone's life! Blood can only be given from one person to another – no other source is currently available. Volunteer blood donors are needed on a daily basis to give blood for the thousands of patients who need it.

Why do minority populations especially need to donate blood?

There is a greater amount of blood types O and B in minority populations than in Caucasians. Because large amounts of blood are needed to treat Sickle Cell disease, which appears primarily in minority populations, there is a growing need for minority blood donors. Of the 5 percent of the population that donates blood, only 10 percent are African-American or Hispanic. During transfusions the patient's blood must match as closely as possible in both the type and specific antigens of the blood being transfused. Because we inherit certain antigens from our ancestors, someone of the same race and ethnicity is found to be a better match for them.

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Do eggs have iron and B12?

One hard-boiled egg has about 0.6 micrograms of B12. That's 25% of your daily value. But you'll need to eat the whole egg. Most of the B12 comes from the yolk.

webmd.com - Foods You Should Eat if You Have a B12 Deficiency - WebMD

All kinds of cells in your body need vitamin B12. That includes red blood cells and glial cells, the kind that protect your nerves. But you don’t make this nutrient on your own. You have to get it from outside sources. It occurs naturally in certain foods, like meat, dairy, and eggs. It’s also added to some foods. On average, most people 14 and older need about 2.4 micrograms a day. The good news is your body stores extra B12 in your liver. If you stop absorbing it, it’ll take a few years to use what’s left. But once you do, you’ll likely have some health problems. These include fatigue, memory trouble, or nerve damage. Treatment can help you get better. If you have a serious deficiency, your doctor will probably give you B12 through a shot in your muscle or a daily high-dose supplement. You may need to make changes to your diet, too. Boost your B12 levels with these foods.

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