Work Question: Full Disclosure?

I am considering resigning from my current job and looking for another one. The biggest problem with my current job is the lack of benefits. Altho am covered on my husband's insurance, I have no life insurance, retirement, etc. I have two leads on two jobs that would include these important benefits. However, my concern is how much do I disclose during an interview? I need to continue my weekly herceptin treatment, and how do I go about mentioning this in an interview? Anyone had this predicament? thanks!