Men with early stage testicular cancer can safely receive one course of chemotherapy or radiotherapy after surgery without it having a long-term effect on their sperm count, according to a study published in the leading cancer journal Annals of Oncology [1]. Although it is known already that several rounds of chemotherapy or high doses of […]
Category: Fertility
Unexpected results suggest a few joints may not harm men’s sperm. Researchers urge caution and call for more research on effects of cannabis on reproductive health
Researchers investigating the effect of cannabis smoking on men’s testicular function have made the unexpected discovery that it is linked to higher sperm counts and higher testosterone levels among moderate users compared to men who never smoked it. The study is published in Human Reproduction [1], one of the world’s leading reproductive medicine journals. Previous […]
No overall increased risk of cancer in children born after fertility treatment
Children born after assisted reproductive technology (ART) do not appear to be at greater risk of developing cancer than other children, according to the first study to look at the long-term cancer risk in ART children compared to those in the general population or who were naturally conceived by subfertile women. The study of 47,690 […]
Chemicals in personal care and household products linked to earlier puberty in girls
Chemicals that are widely used in personal care and household products are linked to girls entering puberty at earlier ages, according to findings from a long-running study of mothers and children. The study in Human Reproduction [1], one of the world’s leading reproductive medicine journals, found that chemicals such as phthalates, parabens and phenols were […]
Soy-based formula milk is linked to increased risk of menstrual pain in young women
If women were fed soy-based formula milk when they were babies, they are at increased risk of suffering from severe pain during their menstrual bleeds, according to the latest study to investigate the link. In a study published in Human Reproduction [1], one of the world’s leading reproductive medicine journals, researchers looked at data from […]
The age at which women experience their first period is linked to their sons’ age at puberty
The age at which young women experience their first menstrual bleeding is linked to the age at which their sons start puberty, according to the largest study to investigate this association in both sons and daughters. The research, which is published in Human Reproduction [1], one of the world’s leading reproductive medicine journals, looked at […]
Why single embryo transfer during IVF sometimes results in twins or triplets: world’s largest study investigates prevalence and causes
It has been known for some time that it is better to transfer a single embryo to a woman’s womb during assisted reproduction treatment (ART) rather than several embryos in order to avoid a multiple pregnancy and the risks associated with it such as foetal deaths, miscarriage, premature delivery and low birthweight. However, even when […]
Study of more than 107,000 women shows exercise is unrelated to risk of early menopause
The amount of physical activity that women undertake is not linked to their risk of early menopause, according to the largest study ever to investigate this question. Until now, there have been conflicting findings about the relation between physical activity and menopause, with some studies suggesting that women who are very physically active may be […]
Largest study yet shows type of underwear is linked to men’s semen quality; boxer shorts are best
Men who wear boxer shorts have higher sperm concentrations than men who wear tighter fitting underwear, according to new research published in Human Reproduction [1], one of the world’s leading reproductive medicine journals. The researchers also found that boxer shorts-wearing men had lower levels of follicle-stimulating hormone (FSH), compared to men who most frequently wore […]
Treatments for cancer and sickle cell disease deplete germ cells in young boys
Scientists have discovered that some treatments for cancer and sickle cell disease can destroy the germ cells that go on to develop into sperm in the testes of young boys. In some pre-pubescent boys, the treatment for sickle cell disease results in complete destruction of all their germ cells, which are called spermatogonia. The study, […]