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 newest frequency out-of sterility among lovers off reproductive age ranges, based on individuals supply, regarding 8% in order to 25% [1–3]. Male sterility is the only factor in infertility into the 20–30% regarding circumstances and you may one thing leading to sterility in 50% of all sterility cases . The fresh new research out-of male fertility always is sold with scientific examination and you can review on site viewpoints of your own following the semen details: regularity, complete sperm fertility, amount, motility and you will morphology (Desk step one) . Reduced sperm count and you will/otherwise top quality is present inside the ninety% out-of partners which have fertility troubles . About testing out-of virility, the brand new concentrations regarding men reproductive hormone are reviewed. Now, the unit composition regarding cum tissue, analyzed of the evaluating the amount of DNA fragmentation otherwise oxidative fret might have been increasingly taken into consideration. Numerous training make use of the DNA fragmentation directory (DFI) since the an indicator of pregnancy triumph. Based on Evenson and Wixon, DFI ranges of 3 to 5% for the match guys, while you are a beneficial DFI regarding ? 30% is for the less virility . Currently outlined genetic products, along with one another chromosomal aberrations and you may monogenic transform, take into account no more than ten–15% out of instances of men infertility . The cause for virility problems may also be environmental circumstances. The aim of the analysis was to learn the relationship between diet plan, energy balance and you can virility rates into the guys.
Means 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 https://datingranking.net/escort-directory/allen/ 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.
|Sperm parameter||Source limit (95% believe menstruation)|
|Sperm volume||step 1.5 ml (1.4–step one.7)|
|Overall sperm count||39 mil for every single squirt (33–46)|
|Jizz attention||15 billion for every ml (12–16)|
|Energies||58% real time (55–63)|
|Modern motility||32% (31–34)|
|Full (modern + nonprogressive) motility||40% (38–42)|
|Morphologically regular models||4.0% (3.0–cuatro.0)|