Hi everyone. I'm worried about my dad losing his mind. I wouldn't call him old, he only just turned 59. He's always been sort of mean and very controlling, but lately these traits have become extreme. He'll be somewhat calm for a few weeks or months, and then all of a sudden he'll wake up one morning with such a mean and hateful attitude like the world is out to get him, and he'll stay that way for just as long as his calmer phase. I've suspected for a while that he's manic-depressive, or has bipolar disorder. Lately he's become OBSESSED with the world ending, and has spent thousands of dollars on non-perishable food and water and weapons, and has become very withdrawn. He has started believing that God speaks to him and gives him specific details about the world ending. He raised the family in a Lutheran Church, but now believes that any form of Christianity other than what he hears on extreme right wing "Christian" talk radio is evil. We have a large family, and out of five kids only two of my siblings still live at home, and he constantly accuses them of being gone when they've been home all night, and he'll purposefully trap them there by parking behind them in the driveway and then taking a nap and demanding not to be disturbed. He was a functioning alcoholic for years and quit drinking about a year ago. He treats my mom like absolute dirt. He hates her, but I think he keeps her around because it's a game of control. She's 53 and a habitual criminal and a pill addict, and always will be, and I honestly think he secretly likes that power struggle of his control on her always being just out of his reach. Like I said, he's always been crabby and mean, but lately I think he's been having delusions. It's difficult to communicate with him because he's become so pessimistic. He has high blood pressure, but is otherwise generally healthy. He's maybe 20 or 30 pounds overweight from his beer belly. He still works for the same company that he's been at for over 30 years. There are 4 grandkids, and he's affectionate towards them and never mistreats them. It's just the rest of the family that is experiencing changes with him. Any thoughts would be greatly appreciated.