Effects of advanced paternal age on fertility

Owing to sociocultural and economic factors, there has been a considerable increase in recent years in the number of men over the age of 35 who wish to have children. As a couple ages, the probability that they will experience reproductive problems increases. The negative effect of maternal age on fertility has been widely documented and we know that fertility diminishes drastically after the age of 39. Maternal aging is also associated with miscarriage, pregnancy complications, congenital anomalies and an increase in perinatal mortality.
However, few studies analyse the effect of  paternal age on success after the application of assisted reproduction technology (ART) and the results they provide are contradictory. It is true that the male reproductive function is less vulnerable than the female where the aging process is concerned, as is demonstrated by the fact that many babies have been born spontaneously to fathers who are in their seventies or eighties. However, some associations have been found in specific studies that relate a negative effect of advanced paternal age with: […]

2018-03-23T10:03:08+02:0023 de March de 2018|0 Comments
Read More

Sterility and Infertility

Are sterility and infertility the same?
No, they are two completely different concepts.
Sterility is the inability to conceive whilst infertility is the inability to complete a full term pregnancy and give birth to a healthy child. […]

2020-06-26T12:13:40+02:009 de February de 2018|0 Comments
Read More

Does being sexually aroused improve semen quality?

It has been scientifically proven that there are risk factors in our daily lives that have a negative impact on the quantity and quality of spermatozoa. These factors include emotional stress, doing a physically demanding job, sitting for prolonged periods of time, elevated local temperature, having high blood pressure and taking certain drugs over a prolonged period of time.
With this in mind, are there factors in our daily lives that are good for semen quality? […]

2017-07-12T09:28:29+02:0014 de July de 2017|0 Comments
Read More

What are the main causes of male sterility and infertility?

The male partner’s role in infertility has, historically, been undervalued and underdiagnosed for cultural and social reasons. However, we are now seeing progress in the analysis of men and a growing interest amongst patients in their fertility issue. Consultations for men with difficulties having children are increasingly common.
The causes of male sterility (male factor) have seen a significant increase over the last few years and are now responsible for up to 50% of cases of sterility in couples. Up to 30% of cases of infertility are due to the male factor alone and in a further 20% of cases there is a combination of both male and female factors. This is why urological examination of the male partner is so important during the couple’s fertility analysis. […]

2018-09-10T18:35:22+02:0016 de June de 2017|2 Comments
Read More

What information does a FISH procedure on spermatozoa provide us with?

When a fertility analysis in the male partner is limited to a seminogram or spermiogram, we only get a partial view of semen quality. A seminogram only provides us with information on the number and characteristics of sperm in the ejaculate (mobility, morphology…). It does not, however, tell us anything about other aspects such as sperm DNA integrity […]

2018-03-26T17:56:49+02:0020 de January de 2017|0 Comments
Read More

What is a spermatid?

Spermatozoa production takes place in the testicular seminiferous tubules and the process is known as spermatogenesis.  At the end of this process, a germ cell generates 4 mature spermatozoa which will survive in the human body for between 62 and 75 days.  The final stage in spermatogenesis, known as spermiogenesis, is a cell differentiation and maturation process consisting of the change from spermatids to spermatozoa.  As can be seen in the picture, the spermatids develop from secondary spermatocites and have already undergone Meiosis I and II division. They have a normal set of chromosomes (haploid) which means that fertilisation of a mature egg can take place. Therefore, and despite the fact that they are immature cells, they can be used in assisted reproduction techniques using ICSI when there are no mature sperm in samples taken from the ejaculate or testicles. […]

2017-01-13T14:38:30+02:0013 de January de 2017|0 Comments
Read More

Asthenozoospermia: What is it? How can it be detected? What course of treatment can be used in order to get pregnant?

Asthenozoospermia is a decrease in the percentage of motile sperm in a sperm sample and it is identified by means of a seminogram or semen analysis.
Nowadays, seminograms are a basic tool which provide us with information in order to evaluate a man’s fertility and they are very useful when determining personalised treatment for the couple concerned. The analysis can be used to evaluate numerous factors such as the concentration, motility and morphology of sperm present in the ejaculate, amongst others.
According to the criteria included in the 5th edition of the World Health Organisation (WHO) (2010) manual, a man has asthenozoospermia when less than 32% of sperm in the ejaculate have progressive motility (sperm which move around) or when there it less than 40% total motile sperm (motile sperm which do and do not move around). […]

2019-06-20T08:32:21+02:0030 de December de 2016|0 Comments
Read More

How are seminograms interpreted?

A seminogram, or semen analysis, is a basic analysis of a semen sample with the aim of determining semen quality. In order to carry out the analysis correctly, the patient needs to refrain from sexual intercourse for a period of 3 to 5 days. That is, he must not ejaculate during that period and the sample must be obtained by means of masturbation.
The most relevant parameters evaluated in a semen sample include: […]

2016-12-13T19:08:46+02:0016 de December de 2016|0 Comments
Read More

Oligozoospermia: What is it? How can it be detected? What course of treatment can be used in order to get pregnant? What about criptozoospermia?

Oligozoospermia is the presence of an abnormally low number of sperm in a semen sample.
According to the criteria in the 5th edition of the World Health Organisation (WHO) manual, normal sperm content in a sample of semen should be equal to or above 15 million per millimetre. If a sperm count gives a result below this figure, this is known as oligozoospermia and it may be associated with fertility issues. More than one sample will need to be evaluated in order to confirm this.
The diagnosis method consists of a spermogram which, amongst other things, gives a sperm count per millimetre of semen. […]

2019-06-20T08:32:42+02:004 de November de 2016|0 Comments
Read More

Male fertility tests

When a couple is faced with difficulties getting pregnant, there is approximately a 50% chance of the reason for this being a factor in the male partner.
The main cause of fertility issues in men is poor semen quality. Therefore, various parameters in semen need to be analysed in order to determine what the quality of the semen is. Two parameters are particularly important: the concentration or quantity of sperm in semen and their motility. This needs to be adequate in order to ensure that the egg is fertilised.
There are several quick tests available on the market. They are similar to female ovulation tests and they are understood to carefully evaluate semen quality and determine if a man is fertile or not. But are these tests really useful in understanding semen quality? […]

2016-10-20T18:04:30+02:0021 de October de 2016|0 Comments
Read More
Do you need help?