Abstract. Research conducted in recent years provides more and more evidence that diet can have a significant impact on male fertility. The aim of the study was to analyze the relationship between diet, energy balance and fertility in men. A comprehensive literature search of published studies in various languages, was carried out in electronic databases. The direct analysis included 96 works published between 2008 and 2018, including 12 randomized controlled trials and 23 systematic reviews and meta-analyses. A strong adherence to a healthy dietary pattern is positively correlated with total sperm count, progressive motility and total motile sperm count (all p < 0.05). However, attention is drawn to the fact that foods that are considered “healthy” can sometimes contain a significant amount of pollution, which negatively affect the semen parameters. An adequate intake of antioxidants or their supplementation have been quite effective in the prevention and treatment of male infertility. The improvement of pregnancy rate after antioxidant therapy ranged in various studies from 11% to 41%. An important problem, however, may be choosing the right dose of the supplement or finding an appropriate combination of antioxidants that may be more effective than any single antioxidant. The normalization of men's body weight is beneficial for the quality of sperm and the concentration of male reproductive hormones. Further, long-term studies require the assessment of the impact of drastic weight loss after bariatric surgery on male fertility.
The fresh new incidence off sterility one of people of reproductive age brackets, considering certain supplies, out-of 8% so you can twenty-five% [1–3]. Male infertility ‘s the merely reason for sterility during the 20–30% from cases and a very important factor adding to sterility from inside the fifty% of all the infertility instances . Brand new evaluation regarding male potency constantly includes scientific examination and you can comparison on resource values of your own following semen variables: frequency, full sperm count, concentration, motility and you can morphology (Table step 1) . Lower sperm fertility and you can/otherwise quality is obtainable into the 90% of lovers that have virility trouble . In the comparison regarding fertility, the fresh density off male reproductive hormonal are assessed. Now, brand new unit structure of cum tissue, assessed by the researching the degree of DNA fragmentation otherwise oxidative be concerned might have been much more taken into account. Multiple training utilize the DNA fragmentation list (DFI) due to the fact indicative of being pregnant success. Considering Evenson and Wixon, DFI selections regarding three to five% for the compliment boys, when you are a great DFI regarding ? 30% is for the faster virility . Already discussed genetic situations, and one another chromosomal aberrations and monogenic alter, be the cause of no more than ten–15% of cases of men infertility . The reason to have fertility difficulties can be ecological issues. The goal of the study were to learn the partnership ranging from diet, times equilibrium and you will fertility cost inside men.
Method out of literary works look
A comprehensive literature search of published studies in various languages, was carried out in electronic databases, including: PubMed, Cochrane Central Register of Controlled Trials (CENTRAL), Cochrane Database of Systematic Review and Google Scholar. Randomized controlled trials, observational and qualitative studies published between 2008 and 2018 (up to and including March) were included. The following keywords related to male infertility, diet, nutrients and their combinations (made by applying operators AND and OR) were used in the search: ‘male infertility’, ‘sperm quality’, ‘idiopathic oligozoospermia’, ‘astenoazospermia’, ‘oligoastenoteratozoospermia’, ‘sperm DNA damage’, ‘nutritional status’, ‘BMI’, ‘obesity’, ‘diet’, ‘nutrition’, dietary pattern’, ‘food’, ‘nutrient’, ‘fatty acids’, ‘antioxidant’, ‘supplementation’, ‘vitamin C’, ‘vitamin E’,’ vitamin A’, ‘folate’, ‘zinc’, ‘selenium’, ‘L-carnitine’, ‘glutathione’, ‘coenzyme Q10‘, ‘N-acetylcysteine’, ‘lycopene’. Reference lists of studies extracted from the primary electronic search were used to identify additional relevant studies.
|Semen parameter||Site limit (95% rely on periods)|
|Semen frequency||step 1.5 ml (1.4–1.7)|
|Total sperm fertility||39 billion Allen TX backpage escort for each squirt (33–46)|
|Sperm concentration||15 billion per ml (12–16)|
|Energies||58% real time (55–63)|
|Modern motility||32% (31–34)|
|Total (modern + nonprogressive) motility||40% (38–42)|
|Morphologically normal variations||cuatro.0% (3.0–4.0)|