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Testosterone Cypionate and Erythrocytosis: Diet Protocols That Help Manage Elevated Hematocrit

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At a glance

  • Diet protocol / no study found testing one to lower hematocrit on testosterone
  • Hematocrit rise with intramuscular enanthate or cypionate / Mean 4.0% vs placebo in a 29-trial analysis [4]
  • Erythrocytosis rate, injectable / 66.7% in one 3-year review, vs 12.8% with gels [5]
  • Depo-Testosterone monitoring / Hemoglobin and hematocrit periodically during long-term use [1]
  • Action threshold in one guide / Hematocrit above 54% [2]
  • Diet and iron / Dietary factors affect iron absorption from a meal [3]

Does Testosterone Cypionate Raise Hematocrit?

Yes. The Depo-Testosterone label says androgens have been reported to stimulate red blood cell production by enhancing production of erythropoietic stimulation factor [1]. In a 2022 network meta-analysis of 29 placebo-controlled trials in 3,393 men, intramuscular testosterone enanthate or cypionate raised mean hematocrit by 4.0% versus placebo (95% CI 2.9 to 5.1) [4]. A retrospective review of 178 hypogonadal men followed for 3 years found erythrocytosis (hematocrit above 50%) in 66.7% of men on injectable testosterone, 12.8% on gels and 35.1% on pellets; the injection group was younger with higher baseline hematocrit, and the review was not randomized [5].

Is There a Diet Protocol That Lowers Hematocrit?

Diet can change iron absorption. A 2000 paper that developed an algorithm for predicting dietary iron absorption modeled the effects of phytate, polyphenols, ascorbic acid, meat, fish and seafood, calcium, egg, soy protein and alcohol on heme and nonheme iron absorption from meals [3]. It measured iron absorption from meals, not hematocrit in men taking testosterone cypionate [3].

What Does the Depo-Testosterone Label Say?

The Depo-Testosterone label lists polycythemia among hematologic adverse reactions and says to check hemoglobin and hematocrit periodically during long-term use [1]. It also lists venous thromboembolism as a vascular adverse reaction and says to discontinue treatment with testosterone cypionate if a venous thromboembolic event is suspected [1].

What Hematocrit Level Prompts Action?

A 2023 clinical consultation guide on erythrocytosis in men receiving testosterone therapy says providers should decrease or discontinue therapy if hematocrit exceeds 54% until it normalizes [2]. The Endocrine Society 2018 guideline recommends against starting testosterone in men with elevated hematocrit and recommends monitoring hematocrit during the first year of therapy [6].

Frequently asked questions

How much does testosterone cypionate raise hematocrit?
In a 2022 network meta-analysis of 29 trials and 3,393 men, intramuscular enanthate or cypionate raised mean hematocrit by 4.0% versus placebo (95% CI 2.9 to 5.1) [4].
What hematocrit level is considered high on testosterone therapy?
A 2023 clinical consultation guide says providers should decrease or discontinue testosterone therapy when hematocrit exceeds 54% until it normalizes [2].
Does the Depo-Testosterone label require hematocrit monitoring?
The label says to check hemoglobin and hematocrit periodically during long-term use and lists polycythemia as an adverse reaction [1].
What dietary factors change iron absorption?
A 2000 algorithm paper modeled the effects of phytate, polyphenols, ascorbic acid, meat, fish and seafood, calcium, egg, soy protein and alcohol on heme and nonheme iron absorption from meals [3]. It did not study hematocrit in men taking testosterone cypionate.

References

  1. U.S. National Library of Medicine, DailyMed. Depo-Testosterone (cypionate) intramuscular, Pharmacia & Upjohn/Pfizer (testosterone cypionate) prescribing information. Depo-Testosterone (cypionate) intramuscular, Pharmacia & Upjohn/Pfizer (testosterone cypionate) label
  2. Agrawal P, Singh SM, Kohn T. Management of Erythrocytosis in Men Receiving Testosterone Therapy: Clinical Consultation Guide. Eur Urol Focus. 2023;9(1):20-21. Management of Erythrocytosis in Men Receiving Testosterone Therapy: Clinical Consultation Guide
  3. Hallberg L, Hulthén L. Prediction of dietary iron absorption: an algorithm for calculating absorption and bioavailability of dietary iron. Am J Clin Nutr. 2000;71(5):1147-60. Prediction of dietary iron absorption: an algorithm for calculating absorption and bioavailability of dietary iron
  4. Nackeeran S, Kohn T, Gonzalez D, White J, Ory J, Ramasamy R. The Effect of Route of Testosterone on Changes in Hematocrit: A Systematic Review and Bayesian Network Meta-Analysis of Randomized Trials. J Urol. 2022;207(1):44-51. The Effect of Route of Testosterone on Changes in Hematocrit: A Systematic Review and Bayesian Network Meta-Analysis of Randomized Trials
  5. Pastuszak AW, Gomez LP, Scovell JM, Khera M, Lamb DJ, Lipshultz LI. Comparison of the Effects of Testosterone Gels, Injections, and Pellets on Serum Hormones, Erythrocytosis, Lipids, and Prostate-Specific Antigen. Sex Med. 2015;3(3):165-73. Comparison of the Effects of Testosterone Gels, Injections, and Pellets on Serum Hormones, Erythrocytosis, Lipids, and Prostate-Specific Antigen
  6. Bhasin S, Brito JP, Cunningham GR, Hayes FJ, Hodis HN, Matsumoto AM, et al. Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab. 2018;103(5):1715-1744. Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline
Evidence overview for Testosterone Cypionate and Erythrocytosis: Diet Protocols That Help Manage Elevated Hematocrit