You can't sue for "mental torture and emotional neglect." These are not legally recognized causes of action.
You may be able to take legal action to address the health care issue. It is not clear from your description what your spouse is doing to "refuse you access to health care," but if you are covered by their insurance, you have the right to use it. If your spouse has tried to take you off of their health insurance, then the problem can be addressed on a temporary basis by the court if you file for divorce, while the case is pending. Once you are divorced, you will need to provide your own health insurance. You may qualify for COBRA coverage if your divorce causes you to lose health insurance that you had through your spouse; but COBRA tends to be very expensive, and it's likely cheaper to get health insurance on the exchange (so long as it lasts; but let's leave politics out of this).
You also have the right to sue for divorce. Oregon is a no-fault divorce state, which means that any married person has the right to sue for divorce at any time. No reason for the divorce needs to be given, and no reason is relevant. Generally the emotional relationship of the parties and their conduct during the marriage is not legally relevant to anything the divorce court has to decide, although the abuse of one parent by the other is a significant factor in child custody decisions. Obviously we don't want abusive people to have custody of children. It's not clear from your question that you and your spouse have any children together, though.
A word of warning: The courts do not exist to validate your feelings or resolve personal acrimony. They are there to resolve conflicts that society cannot tolerate being unresolved - and they do it far from perfectly. Divorce courts are generally more focused on getting people to a place where everyone can be safe and move on with their lives as best they can, than with the strictest possible notion of fairness and justice.
People have this notion that suing someone will be this glorious redemptive process, where their every injury will be avenged and all their feelings validated. This belief is staggeringly wrong. Lawsuits are intensely unpleasant. They force the parties to live through whatever injuries they originally suffered, for months or years. You have to answer tons of difficult questions, over and over again, and if you change your story even a bit, you can be sunk. They rarely go perfectly - the law often produces results that one side or another considers to be unjust, for technical reasons - or just because "justice" is a pretty subjective concept. The other side has every motive, and every right, to attack your honesty, your conduct, and your motives. And, of course, you need to shell out a fairly large amount of money, most of the time. This is true even if your lawyer is working for a contingent fee, where they don't get paid if they win. And it's certainly true if you lose, and you have to pay the other side's attorney fees, which can be huge. So you really need to think carefully before you embark on any litigation.
That said, if you're unhappy in your marriage, you shouldn't stay in it. You should consult with an attorney in private if you're contemplating a divorce.
