Cryptorchidism, from the Greek words kriptos (hidden) and orquis (testicle), is the failure of one or both testes to descend to the scrotum. It is estimated that between 2 and 5% of newborn boys have this abnormality although the figure rises to 30% when premature boys are taken into account. In many cases, the issue resolves itself naturally and, as a result, at one year of age, only 1% of boys have the condition. […]
Today’s post aims to explain the conclusions drawn from research performed by the Biology Department at Instituto Bernabeu in Alicante in collaboration with the Biotechnology Department at the University of Alicante. The work in question was awarded the ICIRA prize for research. The study looked into the effects of cannabinoids (marijuana derivatives) and substances that are produced by our organisms (endocannabinoids) on male fertility. […]
Human immunodeficiency virus (HIV) is a retrovirus and, during its most advanced stage of infection, it leads to acquired immunodeficiency syndrome (AIDS). Whilst there is currently no cure for HIV/AIDS, antiretroviral treatments do exist that stop the symptoms from developing or delay them until later. As such, we come across increasing numbers of couples of childbearing age who wish to have children and in which one of the partners is a carrier of the virus. […]
The spermatozoa in ejaculate need to have gone through a process known as sperm capacitation in order to obtain the ability to fertilise. This happens naturally in the female reproductive system and techniques in order to make it happen in the laboratory have been undergoing development for many years.
“In vivo” sperm capacitation
In vivo capacitation takes […]
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: […]
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. […]
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? […]
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. […]
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 […]