On St Kilda, mortality rates in male sheep are higher than in females so that the ratio of rams to ewes at mating time is about 1:5. Competition amongst rams is intense. The optimal time for mating and the place of ram lambs in the social system are discussed....
Any alteration that influences any of these steps will affect, to a varying degree, male fertility. Studies have shown that there may be a decline in male fertility with age, as some parameters such assperm concentrationor motility worsen. However, these changes in male fertility are not as d...
Dietary factors and fertility in women of childbearing age.Purpose - Research indicates that there has been an overall decline in fertility rates amongst the British female population, particularly in older females. Although subfertility and infertility can be attributed to a range of genetic and ...
Urology Times staff “I think we as urologists have to be proactive in providing information to our patients so that they avoid financial harm and potentially bodily harm from this sort of misinformation,” says Rena D. Malik, MD. September 10th 2024 Data show short-term benefit of c...
梁启超评价一位历史人物:“综其大纲,不山二端:一曰军事,如购船、购械、造船、造械、筑炮台、缮船坞等是也;二曰商务,如铁路、招商局、织布局、电报局、开平煤矿、漠河金矿等是也。”该材料可为研究哪一历史内容提供素材
To improve awareness about the potentially modifiable factors that affect fertility and reproductive outcomes, 'Your Fertility', a fertility health promotion programme funded by the Australian Government, was established in 2011. This paper describes the development and evaluation of the reach of the ...
I had a male fertility test recently and my doctor said that my sperm count is extremely low and that it's impossible for me to impregnate my wife. I know the reason too, it's steroids. I used steroids on and off over the years for body-building. I knew before I started that stero...
Worldwide rising trend in infertility has been observed in the past few years with male infertility arising as a major problem. One main reason for the rise in male infertility cases is declining semen quality. It was found that any factor that affects semen quality can affect male fertility....
We aim to stimulate discussion around the inclusion of females in clinical trials, and indeed in pre-clinical models, at all stages of life. 2. The inflammatory basis of CVD It is well established that inflammation is associated with major risk factors for CVD. Plasma inflammatory biomarkers ...
What other factors can affect height? What factors contribute to proteome diversity? How do height and weight change in infancy and toddlerhood? What are some influences that can determine height and weight? How do cultural values affect fertility rate? Give examples. What are the minimal ...