Erythropoiesis, the formation of red blood cells (erythrocytes), is crucial for oxygen transport throughout the body. This means that while estrogen interacts with the process of red blood cell production, it tends to decrease, rather than increase, its output. You might also see indices, which describe the size of your red blood cells and hemoglobin concentrations. The lab measures the amount of red blood cells, hemoglobin (the protein that carries oxygen in your red blood cells), white blood cells and platelets. A complete blood count (CBC) is a blood test that measures amounts and sizes of your red blood cells, hemoglobin, white blood cells and platelets. Discuss your fertility goals with your provider before starting therapy. For men wanting to preserve fertility, alternative treatments or adjunct therapies like hCG can maintain sperm production while on TRT. Injectable testosterone can produce larger hormone fluctuations between doses, which may increase the likelihood of acne and mood swings compared to topical or pellet methods. A thorough medical evaluation, including comprehensive lab work and health history review, is essential before starting TRT. Working with a provider experienced in female hormone optimization reduces these risks substantially. The blood moves more slowly and puts more pressure on the blood vessels. Secondary polycythemia is more common and is usually caused by something outside the bone marrow. This condition is managed by specialists and often treated with medicine and regular blood removal, called phlebotomy. It is usually caused by a gene mutation and is not linked to hormone therapy or lifestyle. That can lead to heart attacks, strokes, or other serious health problems. These clots can block blood flow to important areas, like the heart, lungs, or brain. Certain health conditions can also affect red blood cell levels. While dehydration does not cause the body to make more red blood cells, it can make lab results look worse than they really are. The body responds by creating more red blood cells, just like it does in smokers. Testosterone replacement therapy plays a significant role in increasing the level of hemoglobin and hematocrit (ratio of red blood cells to the total volume of blood). In both groups, levels of red blood cells increase the most during the first year of treatment. Testosterone administration raised mean testosterone levels into the mid-normal range for young men and resulted in an increase in red blood cells that was accompanied by an increase in serum EPO, suppression of hepcidin and ferritin levels, and an increase in soluble transferrin receptor (sTR). All three can contribute to secondary polycythemia by depriving your body of oxygen and stimulating the production of extra red blood cells to oxygenate your tissues, says Shatzel. This thick blood flows more slowly and can increase the risk of blood clots. This may help some people feel stronger or more energetic, but it can also raise the risk of problems if the blood becomes too thick. Even small increases in hematocrit and hemoglobin may matter over time. Two key parts of this test are hematocrit and hemoglobin levels. The goal is to improve health and quality of life while avoiding side effects, especially those related to the blood and heart. Once testosterone enters the bloodstream, it travels to cells all over the body. Men get started on testosterone replacement and they feel better, but then it's hard to come off of it. Marketers urge men to talk to their doctors if they have certain "possible signs" that mean they could need low-T treatment. The ongoing pharmaceutical marketing blitz promises that low-T treatment can make men feel more alert, energetic, mentally sharp, and sexually functional. It’s only discovered when they undergo blood tests for something else. But, there are things you can do to lower your risk.
