From the article: People who have sex frequently (one or two times a week) have significantly higher levels of immunoglobulin A (IgA).1 Your IgA immune system is your body’s first line of defense.
Its job is to fight off invading organisms at their entry points, reducing or even eliminating the need for activation of your body’s immune system. This may explain why people who have sex frequently also take fewer sick days.
You call one or two times a week...frequent? Who wrote this?