Hoarders profiles adults who suffer from extreme hoarding, a mental disorder marked by an obsessive need to collect things, even if the items are worthless, hazardous, or unsanitary.

Hoarders profiles adults who suffer from extreme hoarding, a mental disorder marked by an obsessive need to collect things, even if the items are worthless, hazardous, or unsanitary.

As you age, your ability to deal with stress decreases. What's more: Lots of stress throughout your lifetime can accelerate aspects of aging. Here, examine a series of intriguing experiments and studies that explain the science behind these two views about the intersection between stress and aging.

Why are some stressors more unbearable than others? This episode introduces you to three powerful psychological factors that work to modulate the stress response: having an outlet, taking advantage of social support, and having predictive information about when and how long a stressor will occur.

Get an insightful overview of the multifaceted effects of stress on the female reproductive system. Some of the topics you explore are the intricate relationships between stress and fertilization, ovulation, spontaneous miscarriages, high-tech in vitro fertilization, and the strength of the libido.

Exercise. Meditation. Social support. Religious beliefs. In this concluding episode, learn how these and other outlets can potentially help you manage life's everyday stressors: both biologically and psychologically. Regardless of how many stressors you deal with daily, all of us, according to Professor Sapolsky, have the potential to keep them in perspective.

The first of two episodes on stress and child development takes you inside prenatal and postnatal life. Using two extraordinary examples, Professor Sapolsky reveals the ways a fetus can respond to the environmental stressors of its mother, and how different parenting styles can affect the stress levels of young children.

HAPPY combines cutting-edge science from the new field of "positive psychology" with real-life stories of people from around the world whose lives illustrate these findings.

Despite being simpler than its female counterpart, the male reproductive system is just as vulnerable to chronic stress. Here, discover how stress leads not to a major decrease in testosterone so much as an increase in erectile dysfunction (with a focus on two of the most common symptoms: impotency and premature ejaculation).

How strong a role does socioeconomic status play in what stressors you're exposed to, as well as your potential for chronic stress? It's a provocative question whose answer Professor Sapolsky reveals in this penetrating look at the characteristics and effects of psychosocial stress on both primates and humans.