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 https://datingranking.net/escort-directory/detroit/ 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.
Inclusion
The fresh prevalence out-of infertility among partners from reproductive age ranges, based on some supply, out of 8% to help you twenty five% [1–3]. Male infertility ‘s the only cause of infertility within the 20–30% away from instances and you will a factor causing infertility when you look at the 50% of the many infertility cases . The fresh new assessment regarding male fertility constantly boasts scientific examination and investigations into the reference thinking of your own following semen details: frequency, total sperm fertility, concentration, motility and you may morphology (Dining table step 1) . Reasonable sperm fertility and you may/or quality can be obtained for the 90% off lovers with fertility troubles . On evaluation out of virility, the newest density of men reproductive hormones are assessed. More recently, the latest molecular constitution regarding spunk muscle, reviewed from the contrasting the amount of DNA fragmentation or oxidative be concerned has been increasingly taken into account. Multiple training utilize the DNA fragmentation directory (DFI) because the an indication of pregnancy achievements. Predicated on Evenson and you can Wixon, DFI range regarding 3 to 5% for the fit men, when you find yourself good DFI out-of ? 30% try associated with the shorter fertility . Currently outlined hereditary products, and additionally each other chromosomal aberrations and monogenic transform, account for no more than 10–15% from cases of men infertility . The source having fertility dilemmas can be environment items. The purpose of the research would be to learn the relationship ranging from eating plan, times harmony and you will fertility prices within the people.
Approach regarding books browse
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 factor | Site limitation (95% rely on intervals) |
|---|---|
| Sperm frequency | step one.5 ml (1.4–step 1.7) |
| Overall sperm count | 39 billion per squirt (33–46) |
| Sperm attention | fifteen million each ml (12–16) |
| Vitality | 58% alive (55–63) |
| Progressive motility | 32% (31–34) |
| Overall (modern + nonprogressive) motility | 40% (38–42) |
| Morphologically normal forms | 4.0% (step 3.0–4.0) |
