Are you or your partner just not “in the mood” for sex on a regular basis? Sexless marriages are an undeniable epidemic, says Dr. Phil. And since sex and intimacy are a meaningful part of a relationship, loss of sexual desire can severely affect a marriage.

Is the lack of sexual desire a biological problem, one that is lifestyle generated, or is it a symptom of a bigger problem?

Try to identify the causes in order to understand yourself and your partner, and keep in mind these factors that could be impacting either of you: