 Duvall's publicists say she died from complications due to diabetes. Duvall was 75. You're listening to ABC News. My wife and I both, we ended up mildly sick for a few months, and the nasal congestion was probably the worst part. I had like a post-nasal drip, just super congested all the time. We were taking everything we possibly could, but nothing really worked. Kyrie was miserable until a friend recommended Navage. Navage offers immediate drug-free congestion relief flexibly.