Whether disposable diapers influence reproductive function of boys?
in mass media began to appear Recently messages that use of children`s disposable diapers causes education under a microclimate diaper with the increased temperature and humidity that exerts negative impact on infrastructure of testicles and suppresses a spermatogenesis. Authors claim that the irreversible changes in small egg fabric bringing in the subsequent to infertility and decrease in a potentiality are caused by greenhouse effect. However these statements have no scientific evidence and represent only one conjectures and assumptions.
B references available to us we did not find the works proving a possibility of an adverse effect of children`s disposable diapers on man`s reproductive function. The German endocrinologists in 1997 took measurements of scrotum skin temperature at the boys till 1 year using cotton and disposable diapers. When using cotton diapers the average temperature of skin of a scrotum made 34,9 °C, and when using disposable 36 °C. When using disposable diapers temperature of skin of a scrotum increased by 1,1 °C.
Therefore, when using disposable diapers skin temperature under them increases only by 0,5 - 1,0 °C that does not give the grounds and to speak about lasting greenhouse effect.
For the best understanding of the processes happening in a small egg at boys of younger age needs to concern some questions of a structure and physiology of a small egg. The small egg at a fruit is put in an abdominal cavity and by the time of the birth falls to a scrotum. At the newborn seed tubules have an appearance continuous cellular tyazhy without gleam. The gleam in seed tubules appears only by 7 - 8 lives. At this time the quantity of spermatagoniya increases, and about 9 years single spermatotsita appear. And only by 10 - 15 years the first spermatozoa appear.
In 1984 the prof. V. A. Erenkov (the department chair of propaedeutics of children`s diseases of the Kiev medical university). conducted researches of level of hormones at children of various age. On big statistical material the author convincingly proved that at boys till 10 years with urine the same quantity of androgens and estrogen, as well as at girls, and concentration of testosterone in blood plasma low is allocated.
Thus, the spermatogenesis at boys begins not earlier than 7 - 8 - summer age and, therefore, at children to this age cannot go speeches about any process of its suppression. In the first years of life hormonal activity of cages of Leydiga (producing testosterone and androgens) is minimum.
physiological processes of thermal control in the child`s organism are of Great importance. It is proved that in peripheral areas of a body of the child the exchange of heat occurs between vascular streams of an opposite orientation. The position of a yaichkovy artery in the middle of a grozdyevidny venous texture promotes return of heat to the veins braiding an artery. Presence at a small egg of seven covers and plentiful blood supply allow to level fluctuations of temperature between skin of a scrotum and fabric of a small egg to 5 - 6 °C.
a number of the experimental works devoted to research of impact of high temperatures on a spermatogenesis at adult men Is available. In 1968 Robinson investigated a spermatogenesis at volunteers by immersion of a scrotum in warm water. Oppression of a spermatogenesis came only at temperature increase of water to 45 °C lasting influence not less than 30 minutes for 14 days.
of Fonio in 1961. examined big group of the men working in the conditions of high temperatures. At persons with a normal structure of a scrotum of negative effects it was not observed: Inhabitants of the equatorial latitudes, deserts etc. have no violations of a spermatogenesis which could be put into dependence on ambient temperature. These facts illustrate ample adaptive and compensatory opportunities of an organism with its unique mechanism of thermal control of a small egg.to Urologists and endocrinologists often should face
a problem of continuous impact of the increased temperature on small egg fabric at children in a case when for various reasons by the time of the boy`s birth the small egg remains in an abdominal cavity. Such state is called a kriptorkhizm. Temperature in an abdominal cavity stable also exceeds scrotum skin temperature on 5 °C. Besides, in such cases the yaichkovy artery and veins are widely spread on walls of a hernial bag, there is enough far apart. At such arrangement of an artery and a venous texture the adequate thermolysis is impossible and, as a result, there comes the small egg overheat.
Research of structure of the neostarted-up small egg at the cellular level showed that to 2 - summer age practically at all children fabric of a small egg does not differ from that at healthy children. Only after 3 - summer age violation signs small egg fabric traffic begin to appear. Thus, even at violation of thermal control of a scrotum and continuous impact on fabric
of a small egg of external environment which temperature is 5 °C higher normal changes in fabric of a small egg come only after three-year age.
the facts Given above testify to incorrectness of opinion that use of children`s disposable diapers at boys leads further to development of infertility by creation of greenhouse effect under a diaper.
Knows that in the western countries children`s disposable diapers widely apply since the beginning 60 - x years, i.e. there passed a lot of time to sum up a certain result. The number of fruitless marriages in Western Europe for the last 15 - 20 years increased by 3% and reaches 15% now. A half of such marriages is caused by man`s infertility. The analysis of the reasons of man`s infertility showed that the postponed infectious diseases including at children`s age are the main reason (36%).
the Provided statistical data also demonstrate that broad application of children`s disposable diapers did not cause essential increase in percent of man`s infertility.
Thus, the analysis of foreign and domestic data indicates that temperature increase of skin of a scrotum within 0,5 - 1 °C does not make negative impact on small egg fabric. Adaptation properties of thermal control promote maintenance of constant temperature in a scrotum.