Investigation of racial disparities in semen parameters among white, black, and Asian men

An investigation of racial and ethnic disparities in donor sperm availability in the United States

OBJECTIVE

To determine whether the racial and ethnic distribution of sperm donors contributing to US sperm banks differs from the demographics of the US population and those of US donor sperm recipients undergoing treatment with in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI).

DESIGN

Cross-sectional study.

SETTING

United States donor sperm banks, US Census, and fertility clinics reporting to the Society for Assisted Reproductive Technology Clinic Outcome Reporting System.

PATIENTS

Sperm donors from 18 banks, men aged 18-39 years on the basis of the 2021 Census Current Population Survey, and recipients of donor sperm for IVF and ICSI treatments in clinics reporting to the Assisted Reproductive Technology Clinic Outcome Reporting System from January 1, 2018, to December 31, 2020.

INTERVENTION

None.

MAIN OUTCOME MEASURE

Proportions of sperm donors and donor sperm recipients undergoing IVF and ICSI treatments identifying as each racial and ethnic group.

RESULTS

Eighteen donor sperm banks were identified, encompassing 1,503 donors. Of these donors, 60.9% identified as White compared with 55.1% of the US male population and 67.7% of donor sperm recipients. Proportions of donors identifying as Asian or 2 or more races were larger than those of US men and donor sperm recipients (Asian: 18.6% vs. 6.5%, and 18.6% vs. 10.2%; 2 or more races: 11.6% vs. 2.2%, and 11.6% vs. 1.7%). In contrast, Black donors were underrepresented when compared with the US population of men and donor sperm recipients (2.8% vs. 12.9% and 2.8% vs. 13.0%). Hispanic donors were underrepresented when compared with the US population of men (6.0% vs. 22.2%). The percentages of Hispanic sperm donors and donor sperm recipients were similar (6.0% vs. 7.0%).

CONCLUSION

The racial and ethnic distribution of sperm donors differs significantly from the demographics of the US male population and donor sperm recipients undergoing IVF and ICSI treatments. These findings suggest a need for targeted recruitment efforts for Black sperm donors.

Preconception health indicators among adult US men: Race/ethnicity variations and temporal trends

BACKGROUND

Preconception health is important for men as it is for women. However, optimizing preconception health is understudied among men.

OBJECTIVES

To examine the time trends and temporal shifts in preconception health risk indicators among 20-44-year-old adult US men in need of preconception care and their racial/ethnic variations.

MATERIALS AND METHODS

Data from the 2011-2019 National Survey of Family Growth male file was used to estimate the prevalence of nine preconception health indicators among men (20-44 years) intending to have a future pregnancy (n = 6813), stratifying by race/ethnicity, and assessing temporal changes across the study period. Binary logit and linear regression models estimated temporal trends from 2011-2013 to 2017-2019. Absolute and relative changes were estimated to detect temporal shifts in men's preconception health comparing 2011-2013 to 2017-2019.

RESULTS

Men in all groups exhibited substantial preconception health needs, with unique trends across race/ethnicity groups. Between 2011 and 2019, the prevalence of marijuana use (28.6%-39.4%, p = 0.001), overweight/obese status (60.7%-65.1%, p ≤ 0.001), and the mean number of preconception health indicators (M = 2.69-2.84, p = 0.018) increased. Among non-Hispanic White men, the prevalence of marijuana use (30.1%-41.4%, p = 0.028), overweight/obese status (60.6%-63.7%, p = 0.002), and mean number of preconception health risk indicators (M = 2.74-2.90, p = 0.033) increased. Among Hispanic men, the prevalence of inconsistent/no condom use (68.9%-81.4%, p = 0.022), marijuana use (18.9%-40.4%, p = 0.001), and the mean number preconception health risk indicators (M = 2.50-2.96, p = 0.014) increased. Among non-Hispanic Black men, sexually transmitted infections declined (5.4%-3.6%, p = 0.002). Significant temporal shifts, which varied by race/ethnicity, were also observed.

DISCUSSION AND CONCLUSION

Our study, which provides initial insight into men's preconception health development in the last decade, highlights a tremendous need for preconception health care among men. Their increasing preconception health needs, and their racial/ethnic variations, suggest additional contributors to racial/ethnic differences in men's reproductive outcomes and their long-term health.

Hormonal Injustice: Environmental Toxicants as Drivers of Endocrine Health Disparities

The toll of multiple endocrine disorders has increased substantially in recent decades, and marginalized populations bear a disproportionate burden of disease. Because of the significant individual and societal impact of these conditions, it is essential to identify and address all modifiable risk factors contributing to these disparities. Abundant evidence now links endocrine dysfunction with exposure to endocrine-disrupting chemicals (EDCs), with greater exposures to multiple EDCs occurring among vulnerable groups, such as racial/ethnic minorities, those with low incomes, and others with high endocrine disease burdens. Identifying and eliminating EDC exposures is an essential step in achieving endocrine health equity.