This article contains findings obtained from research on animals:
- The results from animal research studies should not be directly applied to humans and the results may not generalise to the human population.
- There may be significant differences between species in terms of physiology, physiology, and pharmacology, as well as differences in the way diseases and treatments are modelled in animals.
- Any conclusions drawn from animal research should be considered with caution and in the context of other types of research studies such as observational studies, clinical trials, and reviews of the literature.
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Regular consumption of nuts improves sperm parameters such as motility, vitality, and morphology, potentially promoting successful reproductive outcomes in healthy males.
2024 Advances in Nutrition Nut Consumption and Fertility: a Systematic Review and Meta-Analysis Cardoso BR, Fratezzi I, Kellow NJ
Systematic Review Female Fertility Nut Nut Consumption
The researchers in this study carried out a systematic review and meta-analysis, exploring the impact of nut intake on fertility outcomes. They sourced data from four databases: Ovid MEDLINE, Embase, CINAHL, and Scopus, from their inception until June 2023. The inclusion criteria for articles were humans of reproductive age who had consumed nuts for a minimum of three months, with any consequent fertility-related outcomes reported. The researchers undertook a random-effects meta-analysis to produce a collective estimate of the effect of nut consumption on four specific sperm characteristics: total motility, vitality, morphology, and concentration.
In this review and meta-analysis, the researchers involved four studies, evaluating a total of 875 participants, composed of 646 males and 229 females. For males, two randomized control trials involving 223 individuals revealed that a daily consumption of at least 60g of nuts led to an improvement in sperm motility, vitality, and morphology, compared to those consuming fewer nuts, though it did not affect sperm concentration. Conversely, the non-randomized studies could not discern an association between nut consumption and traditional sperm parameters in males, nor could they establish a link between nut intake and embryo implantation, clinical pregnancy or live birth in males and females undergoing Assisted Reproductive Technology (ART).
The intake of date palm enhances the sexual function in infertile couples.
2022 BMC Research Notes The effect of date palm on sexual function in infertile couples: a double-blind controlled clinical trial Jahromi AR, Mosallanezhad Z, Hosini FS, Jamali S, Sharifi N
Randomised Controlled Trial Date Fruit Erectile Dysfunction Female Fertility
The research employed a double-blind, placebo-controlled clinical trial approach involving infertile couples who frequented infertility clinics in Iran in 2019. The intervention group was administered with a capsule of date palm, while the control group was given a placebo. The data on the sexual function of the subjects was gathered using the female sexual function index and the International Index of Erectile function.
All areas of sexual function in both males and females, which include erectile function, orgasmic function, sexual desire, intercourse satisfaction, arousal, lubrication, and pain during intercourse, showed a significant enhancement in the group that consumed date palm in contrast to the control group. This study continued for a month and it demonstrated that date palm indeed has a favorable effect on the sexual functioning of infertile couples.
Ginger significantly improves sperm health, enhancing quality parameters like count, viability, motility, morphology and DNA integrity, thereby boosting fertility.
2021 Veterinary Medicine and Science A systematic review on the effect of Ginger (Zingiber officinale) on improvement of biological and fertility indices of sperm in laboratory animals, poultry and humans Gholami‐Ahangaran M, Karimi‐Dehkordi M, Akbari Javar A, Haj Salehi M, Ostadpoor M
Systematic Review Ginger Sperm Quality Testosterone
The study investigated the impact of ginger on semen quality across different species. It focused on key sperm parameters including count, viability, motility, morphology, and DNA integrity. The research pointed to the antioxidant properties of ginger, attributed to active phenolic compounds, which disrupt the production of free radicals - these are known to cause oxidative stress and negatively impact the quality of sperm. The study also noted ginger's androgenic activity and the associated influence on the levels of gonadotropin and sex hormones, such as testosterone.
In the discussion of results, it was identified that ginger minimizes DNA failures, reduces damage to the mitochondrial genome in sperm cells, and essentially moulds a sperm with apt morphological structure. The sperm, under the influence of ginger, attains progressive motility, high viability, and increased fertility. Overall, the entire fertility indicators of sperm also saw an upswing with the usage of ginger - reinforcing its effectiveness in increasing the total motility, survival rate, the normal morphological structure of sperm, and the number of sperm cells.
Incorporating tree nuts into a Western-style diet subtly modifies specific DNA methylation regions within sperm, thereby showing parts of the sperm epigenome can respond to dietary changes.
2020 Andrology Sperm DNA methylation changes after short‐term nut supplementation in healthy men consuming a Western‐style diet Salas‐Huetos A, James ER, Salas‐Salvadó J, Bulló M, Aston KI, Carrell DT, et al.
Randomised Controlled Trial Hazelnut Sperm Quality Walnut
The study methodology involved a post hoc analysis with a subset of the participants (healthy, non-smoking, and young) from the FERTINUTS 14-week randomized-controlled, parallel trial. The selected participants were from the pool of individuals who completed the entire dietary intervention trial. These individuals were split into two groups: the nut group, which consumed 60 grams per day of mixed nuts for 14 weeks, and the control group, who maintained their regular Western-style diet devoid of nuts.
Investigation of the trial's results revealed no significant changes in overall methylation between the two groups. However, for the nut group, there were 36 genomic regions distinctly showing differential methylation between the beginning and end of the trial with a marked increase in methylation. No such changes were identified in the control group. Analysis also involved examining if nut consumption led to changes in the epigenetic age of cells, but no significant differences were discovered.
Date palm fruit extract may mitigate some harmful effects of formaldehyde on male fertility by improving testosterone, sperm, and testicular conditions.
2020 International Journal of Reproductive BioMedicine (IJRM) The prophylactic effect of date palm (Phoenix dactylifera L.) fruit extract on testicular toxicity induced by formaldehyde: An experimental study Zaren M, Haghpanah T, Asadi Shekari M, Hassan Eftekhar-Vaghefi S
Experimental Study Date Fruit Sperm Quality Testosterone
The study divided thirty-two male mice of similar ages and weight ranges into four groups. The control group was given distilled water orally for 35 days. The Formaldehyde group received a Formaldehyde dose for 20 days. The third group took a Date fruit extract dose for 35 days followed by a Formaldehyde dose for 20 days while the last group was administered Date fruit extract for 35 days. Following these treatments, blood was collected and epididymis and testis tissues analyzed to evaluate sperm characteristics and conduct a histological examination respectively.
Results showed that formaldehyde administration increased sperm deformities, decreased sperm count, livability, and motility, and reduced testosterone levels in comparison to the control group. Histological assessments showed that formaldehyde induced changes in the testes, including damage to the germinal epithelium and vacuolization of the tubules. However, the consumption of Date palm fruit extract was found to ameliorate the effects noticed due to formaldehyde on testosterone levels, sperm, and testicular parameters.
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