The U.S. Department of Health and Human Services is overhauling its family planning programs- prioritizing natural methods over contraceptives. How do the two approaches compare? 

Though the COVID-19 vaccine presents no risk of infertility, research has now confirmed that the shots can affect menstrual cycles, with one recent linking vaccination to a slight increase in menstrual-cycle length. The 21st was joined by two researchers who have documented such cases, as well as an OB/GYN, to clarify the findings and dispel misinformation about the research.