Can someone die from depression?

Yeah, dying from a broken heart.

Nah, I'm just kidding. The feeling itself cannot kill you. However, the feeling can manipulate your thoughts and you could be driven into the direction of suicide.

Depression is a silent killer. It's not directly killing you. It's like someone hiring a hitjob from an assassin.

Depression can control your emotions to the extent where you develop eating disorders or start self-harming.

The side effects could potentially become lethal. It does harm to your body, after all.

One deep cut down a vein and you're gone. If someone finds out that you've been self-harming, you'd probably be hospitalised.

Happens with a lot of people who constantly resort to self-harm to compensate their failing ability of being resilient. They accidentally hit that damn vein and it begins bleeding like hell. Ouch.

Depression is very unpleasant.

It is caused by many factors and it is usually a stage in life which brings people down. So I would say that depression kills in some cases.

No,

They just stop bathing and eating properly. They smell and have no friends and no job. But they keep on living decade after decade after decade. Thats why it makes much more sense to look at your problems, and look at yourself to see what you need to change.

Life is supposed to be bright and fascinating. There will be struggles but much more good times to make it all worth it. What you need is a friend. Don't be all gloomy and negative all the time because you will scare all your potential friends away.