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Food intake diet and sperm characteristics in a blue zone: a Loma Linda Study.
Eur J Obstet Gynecol Reprod Biol. 2016 Aug; 203:112-5.EJ

Abstract

OBJECTIVES

The study examined the effect the life-long vegetarian diet on male fertility and focused on vegetarians living in the Loma Linda blue zone, a demographic area known for life longevity. The objective was to compare sperm characteristics of vegetarian with non-vegetarian males.

STUDY DESIGN

The cross-sectional observational study was based on semen analyses of 474 males from 2009 to 2013. Patients categorized themselves as either life-long lacto-ovo vegetarians (N=26; vegetable diet with dairy and egg products), vegans (N=5; strictly vegetables with no animal products) or non-vegetarians (N=443; no diet restrictions). Sperm quality was assessed using a computer-aided sperm analyzer and strict morphology and chromatin integrity were manually evaluated.

RESULTS

Lacto-ovo vegetarians had lower sperm concentration (50.7±7.4M/mL versus non-vegetarians 69.6±3.2M/mL, mean±S.E.M.). Total motility was lower in the lacto-ovo and vegan groups (33.2±3.8% and 51.8±13.4% respectively) versus non-vegetarians (58.2±1.0%). Vegans had lowest hyperactive motility (0.8±0.7% versus lacto-ovo 5.2±1.2 and non-vegetarians 4.8±0.3%). Sperm strict morphologies were similar for the 3 groups. There were no differences in rapid progression and chromatin integrity.

CONCLUSIONS

The study showed that the vegetables-based food intake decreased sperm quality. In particular, a reduction in sperm quality in male factor patients would be clinically significant and would require review. Furthermore, inadequate sperm hyperactivation in vegans suggested compromised membrane calcium selective channels. However, the study results are cautiously interpreted and more corroborative studies are needed.

Authors+Show Affiliations

Department of Gynecology and Obstetrics, Loma Linda University School of Medicine, Loma Linda, CA, USA.Department of Gynecology and Obstetrics, Loma Linda University School of Medicine, Loma Linda, CA, USA.Department of Gynecology and Obstetrics, Loma Linda University School of Medicine, Loma Linda, CA, USA.Department of Urology, Loma Linda University School of Medicine, Loma Linda, CA, USA.Department of Gynecology and Obstetrics, Loma Linda University School of Medicine, Loma Linda, CA, USA.Department of Gynecology and Obstetrics, Loma Linda University School of Medicine, Loma Linda, CA, USA. Electronic address: pchann@yahoo.com.

Pub Type(s)

Comparative Study
Journal Article
Observational Study

Language

eng

PubMed ID

27280539

Citation

Orzylowska, Eliza M., et al. "Food Intake Diet and Sperm Characteristics in a Blue Zone: a Loma Linda Study." European Journal of Obstetrics, Gynecology, and Reproductive Biology, vol. 203, 2016, pp. 112-5.
Orzylowska EM, Jacobson JD, Bareh GM, et al. Food intake diet and sperm characteristics in a blue zone: a Loma Linda Study. Eur J Obstet Gynecol Reprod Biol. 2016;203:112-5.
Orzylowska, E. M., Jacobson, J. D., Bareh, G. M., Ko, E. Y., Corselli, J. U., & Chan, P. J. (2016). Food intake diet and sperm characteristics in a blue zone: a Loma Linda Study. European Journal of Obstetrics, Gynecology, and Reproductive Biology, 203, 112-5. https://doi.org/10.1016/j.ejogrb.2016.05.043
Orzylowska EM, et al. Food Intake Diet and Sperm Characteristics in a Blue Zone: a Loma Linda Study. Eur J Obstet Gynecol Reprod Biol. 2016;203:112-5. PubMed PMID: 27280539.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Food intake diet and sperm characteristics in a blue zone: a Loma Linda Study. AU - Orzylowska,Eliza M, AU - Jacobson,John D, AU - Bareh,Gihan M, AU - Ko,Edmund Y, AU - Corselli,Johannah U, AU - Chan,Philip J, Y1 - 2016/05/30/ PY - 2016/02/15/received PY - 2016/05/09/revised PY - 2016/05/21/accepted PY - 2016/6/10/entrez PY - 2016/6/10/pubmed PY - 2017/4/14/medline KW - Hyperactivation KW - Lacto-ovo KW - Male infertility KW - Sperm KW - Vegan KW - Vegetarian SP - 112 EP - 5 JF - European journal of obstetrics, gynecology, and reproductive biology JO - Eur J Obstet Gynecol Reprod Biol VL - 203 N2 - OBJECTIVES: The study examined the effect the life-long vegetarian diet on male fertility and focused on vegetarians living in the Loma Linda blue zone, a demographic area known for life longevity. The objective was to compare sperm characteristics of vegetarian with non-vegetarian males. STUDY DESIGN: The cross-sectional observational study was based on semen analyses of 474 males from 2009 to 2013. Patients categorized themselves as either life-long lacto-ovo vegetarians (N=26; vegetable diet with dairy and egg products), vegans (N=5; strictly vegetables with no animal products) or non-vegetarians (N=443; no diet restrictions). Sperm quality was assessed using a computer-aided sperm analyzer and strict morphology and chromatin integrity were manually evaluated. RESULTS: Lacto-ovo vegetarians had lower sperm concentration (50.7±7.4M/mL versus non-vegetarians 69.6±3.2M/mL, mean±S.E.M.). Total motility was lower in the lacto-ovo and vegan groups (33.2±3.8% and 51.8±13.4% respectively) versus non-vegetarians (58.2±1.0%). Vegans had lowest hyperactive motility (0.8±0.7% versus lacto-ovo 5.2±1.2 and non-vegetarians 4.8±0.3%). Sperm strict morphologies were similar for the 3 groups. There were no differences in rapid progression and chromatin integrity. CONCLUSIONS: The study showed that the vegetables-based food intake decreased sperm quality. In particular, a reduction in sperm quality in male factor patients would be clinically significant and would require review. Furthermore, inadequate sperm hyperactivation in vegans suggested compromised membrane calcium selective channels. However, the study results are cautiously interpreted and more corroborative studies are needed. SN - 1872-7654 UR - https://www.unboundmedicine.com/medline/citation/27280539/Food_intake_diet_and_sperm_characteristics_in_a_blue_zone:_a_Loma_Linda_Study_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0301-2115(16)30261-5 DB - PRIME DP - Unbound Medicine ER -