If you’re reading this, you probably know something obesity, but it’s important to understand what we’re talking about when we talk about depression. It’s not just feeling sad or down because of a setback, a tragedy, or a personal situation we’re unhappy with. It’s not even simply feeling low for a few hours or a day or two for no particular reason. Clinical depression is a prolonged period of unhappiness that can take a number of different forms. Obvious signs of sadness – such as frequent crying – may or may not be involved. In some cases, sufferers may not even think they are feeling particularly sad. It takes many forms but clinical depression is marked by an ongoing sense of hopelessness, difficulty with motivation, and a loss of interest in a person’s favorite pastimes or subjects. On the other hand, even though depression is more than simple sadness or grief, it can be triggered by a serious personal loss or disappointment. In these cases, the difference is that grief and sadness over an event eventually dissipate, while depression lingers indefinitely.