Too much sex can cause depression.

A new report claims sex can get too much, and more sex does not necessarily make people happier. Scientists discovered that increasing the amount you usually have could actually induce minor depression.
According to Tech Times, an academic team has just published the findings from its extensive research "between the sheets". The researchers from Carnegie Mellon University said that while people with healthy sex lives are generally happy, it's not necessarily linked to the amount of sex they're having.
The academics found having more frequent sex didn't decrease the desire for it or enjoyment, but instead, they suggested, the slight decrease in happiness was likely down to the fact of being asked to do something more rather than letting it happen naturally.
Study co-author Tamar Krishnamurti says the findings could help couples increase their happiness by improving their sex lives, and not necessarily in terms of how often they engage in the act. She said;
Quality can be as important as quantity. Instead of focusing on increasing sexual frequency to the levels they experienced at the beginning of a relationship, couples may want to work on creating an environment that sparks their desire and makes the sex that they do have even more fun."