A large study from Sweden has found no link between Covid-19 vaccines and reduced female fertility. Researchers reviewed health records for around 60,000 women aged 18 to 45 and found no meaningful difference in pregnancy or miscarriage rates between women who were vaccinated and those who were not.
The research was carried out by Linköping University using official healthcare data. About 75 per cent of the women studied had received at least one Covid vaccine. The team compared childbirths, miscarriages, and other outcomes over several years and found no evidence that vaccination affected the ability to conceive.
During the pandemic, some countries, including Sweden, saw a drop in birth rates. The researchers say this decline is very unlikely to be linked to vaccines. Instead, they point to factors such as financial stress, health worries, and reduced social contact during lockdowns.
The findings support earlier international research showing that Covid vaccines do not damage fertility in women or men. Health experts say claims suggesting vaccines cause infertility are not supported by scientific evidence.
Some women did report temporary changes to their menstrual cycle after vaccination, including unexpected bleeding. Studies show these effects are short-lived and do not affect fertility. Experts believe the body’s immune response may briefly influence hormones or the lining of the uterus.