Ask Amy: How can my son escape his abusive marriage?

Article here. Excerpt:

'Dear Amy: My 40-year-old son is in an abusive marriage. His wife hits him, locks him out of the house, calls him humiliating names, has alienated him from his friends and family, etc.

He has lost 70 pounds and developed dangerous stress-related symptoms. He’s a shell of what he once was. He acts confused and disoriented, rather than our smart, capable and popular son. It’s heartbreaking.
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They have two small children who witness this abuse. He’s very worried about the kids, but is so broken down he doesn’t feel capable of caring for them on his own. We’ve told him we will care for them, but he tells us it’s too much of a burden.
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It’s hard for us to be good in-laws when we’re aware of this. She often blows up at us if we try to talk about it. We are sick with worry about our son.

Dear Mom: According to the Centers for Disease Control and Prevention, one in seven men (over the age of 18) in the U.S. has been the victim of severe physical violence by an intimate partner.

Your focus should be on your son’s health and self-esteem, and on providing a safe place for the children. His weight loss and other symptoms are alarming, and you should encourage him to get a thorough physical checkup and mental health screening. If he isn’t making progress in therapy, you should help him to find one that specializes in working with abused men.'