- A study was conducted to explore potential changes in menstrual cycles post-COVID-19 vaccination among women in six Arab countries, focusing on cycle length, bleeding duration, and pain levels.
- Results from nearly 5,000 menstruating females indicated that vaccinated individuals experienced increased back pain, nausea, menstrual pain, and heavier bleeding compared to those unvaccinated.
- The study concluded that the COVID-19 vaccine might influence menstrual patterns, highlighting the need for further longitudinal research to fully understand these effects.