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.
Introduction
The newest frequency from sterility among people of reproductive age brackets, considering individuals source, regarding 8% so you can twenty-five% [1–3]. Male infertility ‘s the only reason behind infertility into the 20–30% off circumstances and the one thing leading to sterility from inside the 50% of the many sterility cases . The newest evaluation off male fertility usually boasts medical examination and you can assessment into site opinions of one’s following sperm details: frequency, total sperm fertility, quantity, motility and you may morphology (Dining table step one) . Reduced sperm count and/otherwise top quality exists when you look at the ninety% from lovers with virility difficulties . On investigations out-of fertility, new concentrations away from men reproductive hormonal also are reviewed. Recently, the latest molecular constitution regarding jizz tissues, reviewed because of the comparing the degree of DNA fragmentation or oxidative fret has been increasingly taken into account. Several education make use of the DNA fragmentation directory (DFI) given that an indicator of pregnancy success. According to Evenson and you can Wixon, DFI selections from three to five% in match males, while you are a great DFI of ? 30% try from the reduced virility . Currently laid out hereditary factors, in addition to both chromosomal aberrations and you may monogenic transform, account for just about 10–15% out-of cases of male infertility . The source having fertility problems can also be ecological activities. The aim of the study would be to get acquainted with the connection ranging from diet, opportunity equilibrium and fertility costs from inside the boys.
Means from literary works search
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 escort girl Rochester 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 factor | Site limitation (95% count on durations) |
|---|---|
| Semen frequency | step 1.5 ml (step one.4–1.7) |
| Total sperm fertility | 39 million for each ejaculate (33–46) |
| Sperm quantity | fifteen mil per ml (12–16) |
| Efforts | 58% live (55–63) |
| Modern motility | 32% (31–34) |
| Full (modern + nonprogressive) motility | 40% (38–42) |
| Morphologically typical forms | cuatro.0% (step 3.0–cuatro.0) |
