Successful or unsuccessful attempts at artificial insemination fertilization or in vitro fertilisation also influenced by season. In the spring season, the chances of conception greater than in other seasons.
Scientists have long known that birth rates naturally tend to increase in certain seasons. However, never known for sure what causes it, was limited to allegations that the temperature or the temperature affects the chances of conception.
Recently scientists revealed that a similar trend also occurred in the technology of artificial insemination and IVF. Chance of success in these methods also vary in each season in one year.
The team of researchers from Sao Paulo, Brazil, led by Dr. Daniela Braga revealed that after observing 1932 patients who underwent mating syringe. Each masign participants underwent the procedure on the season
vary in the same year.
When fertilization occurs, the opportunity to obtain embryos with the same excellent quality is not very different in each season. But for the occurrence of fertilization, it appears the difference in success rate is quite significant in some seasons.
Fertilization was recorded at most occur if done in the spring, which is 73.5 percent. Row below it is the fall by 69 percent, 68.7 percent of summer and winter 67.9 percent.
The researchers also noted increased production of the hormone 17-beta estradiol in the spring. Hormone is one form of estrogen, which is produced by women during their stay on the fertile age after puberty and before menopause.
“The success rate is higher in the spring of nearly 1.5-fold. This means if you have difficulties to fertilize, try to do at that season,” said Dr. Braga as quoted by the ScienceDaily, Thursday (16/09/2010).
Alleged causes of these differences is a change in one neuron in the brain that produce gonadotrophin-releasing hormones (GnRH). These hormones regulate the release of estradiol, the highest observed in the spring.
Up to certain levels, increased production of estradiol is needed in the process of egg maturation. Estradiol levels are sufficient to make easier the egg to be fertilized.?