How Can You Reduce Your Red Blood Cell Count? | Safe Steps

When a blood test shows that your red blood cell count runs higher than the lab range, it can feel worrying. Thickened blood moves more slowly, which can raise the chance of clots, strokes, or heart strain. The good news is that high results often have clear reasons, and with the right steps you and your medical team can bring those numbers down.

This guide walks through what a high count really means, which causes you might hear about, and how levels are usually lowered. You will see where lifestyle changes can help, where procedures and medicines step in, and when you need urgent care instead of watchful waiting.

Nothing here replaces face-to-face advice. High red blood cells always call for a plan shaped around you with a doctor who knows your history and current medicines. Use this article as a map for better questions at your next appointment, not as a do-it-yourself treatment plan.

What A High Red Blood Cell Count Actually Means

Red blood cells carry oxygen from your lungs to the rest of your body. A standard complete blood count reports several red-cell related numbers, such as hemoglobin and hematocrit. When these sit above the reference range for your age and sex, many labs label the result as erythrocytosis or polycythemia.

A high count does not always mean a permanent disease. Sometimes it reflects a short-term issue such as dehydration, where the liquid part of the blood (plasma) shrinks and the red cells look packed together. Once you drink more fluids or treat an illness that caused fluid loss, those results can slide back toward your usual baseline.

In other cases, your bone marrow truly produces extra red cells. This may happen in a primary bone-marrow condition such as polycythemia vera, or as a reaction to low oxygen from lung disease, sleep apnea, heart disease, smoking, or long stays at high altitude. Kidney problems and some hormone medicines can also push the body to make more red cells than it needs.

Relative Versus True Erythrocytosis

Doctors often first ask whether the high reading is “relative” or “absolute.” Relative erythrocytosis means the number of cells has not changed much, but the plasma volume has dropped, so the sample looks thicker. This pattern is common with dehydration, heavy sweating, or strong diuretic medicines.

Absolute erythrocytosis means your body has increased the actual mass of red cells. That is the pattern seen with polycythemia vera and with long-standing low oxygen states. Distinguishing these two patterns matters, because the way to lower a “false high” from fluid loss is very different from the way doctors treat a marrow disease.

Primary And Secondary Causes

Primary causes come from changes inside the bone marrow itself. In polycythemia vera, for instance, a mutation in marrow stem cells leads to steady over-production of red cells and sometimes platelets and white blood cells as well. Many resources, such as the Cleveland Clinic overview of erythrocytosis, describe how this condition is diagnosed and monitored.

Secondary causes usually start outside the marrow. Long-term low oxygen from lung disease, sleep apnea, or heavy smoking can trigger the kidneys to release more erythropoietin, a hormone that tells the marrow to make extra red cells. Tumors of the kidney or liver, some heart conditions, and long stays at high altitude can have a similar effect, as outlined in resources such as the MedicineNet review of polycythemia.

How Can You Reduce Your Red Blood Cell Count Safely

Bringing down a high red blood cell count starts with pinning down the cause. A doctor will look at repeat blood counts, your oxygen levels, smoking history, medicines, and any lung, heart, or kidney conditions. They may also arrange tests for sleep apnea or genetic changes in the marrow.

Only after that work-up is complete does a clear plan emerge. For some people, drinking more fluids and treating underlying illness is enough. Others need regular phlebotomy (blood removal), low-dose aspirin, oxygen therapy, or medicines that slow red cell production, approaches described by services such as the NHS guidance on erythrocytosis and the article on erythrocytosis care at Verywell Health.

The sections below group the main strategies into lifestyle steps you can take at home and treatments that need supervision in a clinic. Your plan may draw from both lists.

Main Causes Of High Red Blood Cells And Usual Ways To Lower Them

Cause Or Trigger	How It Raises Red Cells	Typical Step To Reduce Levels
Dehydration	Lower plasma volume makes red cells look more concentrated.	Rehydrate with water and fluids as advised; repeat blood test once well hydrated.
Smoking	Carbon monoxide and low oxygen push the body to make extra red cells.	Stop smoking with help from cessation programs, medicines, or counseling.
Sleep Apnea	Repeated drops in oxygen during sleep stimulate red cell production.	Sleep study; devices such as CPAP or other treatments to keep airways open.
Chronic Lung Or Heart Disease	Low oxygen over months or years drives higher hematocrit.	Long-term management of lung or heart disease; oxygen therapy where needed.
High Altitude Living	Thin air provides less oxygen, so the body adapts with more red cells.	Return to lower altitude if possible; adjust training plans for athletes.
Testosterone Or Anabolic Steroid Use	These hormones stimulate red cell production in the marrow.	Review doses; pause or switch therapy under medical supervision.
Polycythemia Vera	Marrow stem cells gain a mutation and overproduce red cells.	Regular phlebotomy, low-dose aspirin, and sometimes cytoreductive drugs.
Kidney Or Liver Tumors	Some tumors release extra erythropoietin.	Treat the tumor; red cell count often falls once the tumor is controlled.

Steps You Can Take At Home

Many people with slightly raised counts, especially from reversible triggers, can lower risk through steady daily habits. These steps rarely replace medical treatment, yet they work alongside it and help your blood stay less sticky between visits.

Habits To Start

• Drink water through the day: spread fluids from morning to evening rather than gulping them at once, unless your doctor limits fluids for another reason.
• Move often: gentle walks, light cycling, or swimming several times a week keep circulation flowing and reduce long stretches of sitting.
• Build regular sleep: going to bed and waking at similar times can ease strain on heart and lungs; if a partner notices loud snoring or pauses in breathing, ask for a sleep assessment.
• Eat in a heart-friendly way: plenty of vegetables, fruits, whole grains, and healthy fats support blood vessels and overall circulation.

Habits To Avoid

• Heavy smoking or vaping: these raise carbon monoxide levels and drive red cell production upward.
• Unsupervised testosterone or steroid use: pills, gels, or injections from gyms or online shops can push counts higher than your marrow can safely handle.
• Extreme dehydration: frequent saunas, hot-weather training, or long events without fluids can turn a borderline result into a worrisome one.

Changes That Need Medical Supervision

Some levers for lowering a high count sit firmly in your doctor’s hands. These include altering diuretic doses, changing hormone therapy, adjusting oxygen treatment, or starting phlebotomy and cytoreductive medicines. Never change or stop prescriptions on your own, even if you worry they might be raising your count.

For complex cases such as polycythemia vera, many clinics follow guidance from hematology societies that recommend regular blood removal and low-dose aspirin when safe, along with drugs that slow marrow activity for higher-risk patients. Your doctor may refer you to a hematologist if your case needs that level of care.

Lifestyle Changes To Help Lower High Red Blood Cells

Once serious causes have been checked, lifestyle often becomes the long-term focus. Even when you need procedures or tablets, these daily patterns help create a safer backdrop for your blood and blood vessels.

Stay Well Hydrated

When your body runs low on fluid, the liquid part of the blood shrinks and the red cells appear more concentrated on the lab report. Studies on dehydration and blood tests show that hemoglobin and hematocrit can rise in this setting and then fall once fluid balance improves.

For most healthy adults, sipping water regularly, eating water-rich foods such as fruits and vegetables, and adding extra fluids on hot days or during exercise keep the blood less thick. People with kidney, heart, or liver disease may need more detailed fluid plans from their care team, so always follow the advice you receive during appointments.

Quit Smoking And Limit Secondhand Smoke

Smoke exposes your body to carbon monoxide, which binds to hemoglobin and crowds out oxygen. In response, the body often ramps up red cell production to move enough oxygen around. Smokers with high counts sometimes see improvements after quitting, especially when no other major cause is present.

Quitting rarely feels easy, so stack the odds in your favor. Use nicotine replacement or prescription medicines if offered, lean on quit lines and digital tools, and clear cigarettes, lighters, and ashtrays from your home. The sooner you quit, the sooner your blood and blood vessels can start to recover.

Look After Sleep And Breathing

Sleep apnea leaves people with repeated pauses in breathing through the night. Oxygen dips trigger a hormonal chain reaction that asks the marrow to make more red cells. Many people with this pattern feel very tired in the daytime, wake with headaches, or hear from a partner that they gasp or choke in their sleep.

If a doctor suspects sleep apnea, they may order a sleep study at home or in a lab. Treatment, often with a CPAP device that keeps the airway open, can bring oxygen levels back up and may help red cell counts drift downward over time, especially when combined with weight loss and activity changes.

Medical Treatments Your Doctor May Use

When lifestyle alone cannot manage high red cell levels, doctors turn to treatments that directly change the blood. The mix depends on whether your erythrocytosis is primary or secondary, your age, clotting history, and other health issues.

In many people with polycythemia vera, regular phlebotomy and low-dose aspirin form the backbone of care. In higher-risk cases, medicines that slow marrow production, such as hydroxyurea or interferon, may be added. For secondary causes, such as lung disease or heart disease, oxygen therapy and treatment of the underlying condition usually take priority.

Common Treatments Used To Lower High Red Blood Cells

Treatment	Main Goal	Who Commonly Receives It
Therapeutic Phlebotomy	Remove a set volume of blood to bring hematocrit down.	People with polycythemia vera or very high counts at risk of clots.
Low-Dose Aspirin	Reduce the tendency of platelets to clump and form clots.	Many adults with polycythemia vera when bleeding risk is low.
Cytoreductive Medicines	Slow marrow production of red cells (and sometimes platelets).	Higher-risk polycythemia vera, or those who cannot rely on phlebotomy alone.
Oxygen Therapy	Raise oxygen levels so the body no longer needs extra red cells.	People with chronic lung or heart disease and low resting oxygen.
Sleep Apnea Treatment	Prevent oxygen drops during sleep.	Adults with confirmed sleep apnea and high counts.
Change In Hormone Therapy	Remove or reduce medicines that drive red cell production.	Individuals on testosterone or anabolic steroids with rising counts.

Every one of these treatments carries benefits and risks. Phlebotomy can cause iron deficiency if done too frequently, aspirin can raise bleeding risk, and cytoreductive drugs may have side effects such as low white cell counts or liver changes. That is why treatment plans are carefully adjusted over time instead of set once and left alone.

When To Get Urgent Help

A high red blood cell count can raise the risk of clots and strokes, especially when combined with other factors such as high blood pressure, diabetes, or high cholesterol. You need rapid medical help, often in an emergency department, if you notice warning signs such as sudden chest pain, shortness of breath, weakness on one side of the body, slurred speech, or sudden loss of vision.

• Call emergency services at once for stroke-like symptoms, crushing chest pain, or severe trouble breathing.
• Seek same-day medical care for new headaches, dizziness, unusual redness of the face, burning in the hands or feet, or sudden vision changes.
• Arrange a prompt clinic visit if your lab reports show rising counts over several tests, even if you feel well.

Daily Habits Checklist To Support Safer Blood Levels

Lowering a high red blood cell count is rarely a single action. It is a blend of medical treatment, follow-up tests, and small daily choices that all pull in the same direction. This checklist can help you stay on track between appointments.

• Drink water regularly unless your doctor has given fluid limits.
• Quit smoking and avoid smoky spaces as much as you can.
• Stay active with gentle movement on most days of the week.
• Keep follow-up blood tests and bring copies of your results to each visit.
• Ask whether you should be screened for sleep apnea if you snore loudly or feel very sleepy in the daytime.
• Review all hormones and supplements with your doctor, especially testosterone or performance-enhancing products.
• Report new symptoms such as chest pain, breathlessness, or sudden headaches right away instead of waiting for the next scheduled visit.

With a clear diagnosis, steady follow-up, and the right mix of lifestyle changes and medical treatment, many people bring their high red blood cell count into a safer range and lower the risk of serious complications over time.