how much asbestos exposure actually causes meso - is there a safe amount

Man, I'm sorry you're dealing with this. My mom was exposed through her job as a teacher in the 70s and 80s, believe it or not. Old school buildings had asbestos in everything, and it wasn't until way later that anyone actually cared. She got diagnosed in August and I moved back to Phoenix to help her through treatment, so I'm kind of living in the middle of all these "why didn't anyone tell us" questions too.

From what her oncologist explained, there really isn't a safe threshold. It's more about probability and time. The longer you're around it and the more fibers you breathe in, the higher your risk climbs. But it's not like a dose-response thing where you can calculate it out. Some people get exposed for decades and never get sick, and other people get less exposure and develop meso. It's frustrating because you can't go back and know if you could've prevented it somehow.

What helped my mom a little bit was stopping the blame game. Twenty years on the Oriskany, you were breathing that stuff in constantly. That's just what happened. You couldn't have known then what we know now about how bad it actually is. The VA should've been screening people like you years earlier, honestly.

Glad you're recovering okay from the pleurectomy. That's something to hold onto.

I think the straight answer your VSO hinted at is actually the one you landed on - there's no safe threshold. From a clinical standpoint, asbestos fibers are carcinogenic at basically any exposure level, which is why the Navy eventually pulled it out of ships. It's not like lead where there's debate about safe levels. The question isn't really whether you got too much, it's more about the probability math over time, and 20 years on a hull tech rate where you're working with insulation and gaskets puts you in a really high exposure category.

My dad was a carpenter who worked in older buildings through the 80s and we spent years trying to figure out if he "should have known" sooner. But honestly that rabbit hole didn't help him and it's not helping me now that I'm managing his palliative care. What actually matters is you caught it at Stage II after the pleurectomy. That's genuinely a better position than a lot of people get.

The latency piece is real though. Docs told us his exposure was probably 1970-1985 but symptoms didn't show until 2024. So for years he had no idea what was building in his lungs. Your VA screening actually caught it faster than most people's symptoms would have, which is kind of the one thing working in your favor here. How are you feeling post-pleurectomy? The recovery timeline can be rough.

Same ship, same job basically. There's no safe amount, that's the straight answer. Asbestos is asbestos, and twenty years of it adds up.

No safe amount. That's the straight answer. I've read everything the VA gave me and talked to the thoracic surgeon who did my pleurectomy in August. The docs say there's no threshold where asbestos becomes okay. One fiber can do it if conditions line up right, but typically you need years of exposure like we had.

The thing about the Oriskany is we weren't just around it, we lived in it. You're breathing that stuff in the berthing compartments, working in the engine spaces, handling insulation during maintenance. Twenty years of that accumulates in your lungs and the latency period is brutal because you feel fine the whole time. I didn't have symptoms until June when they caught it on the routine screening.

What got me was understanding the difference between exposure and disease. Plenty of guys were exposed just as much as I was and haven't developed it yet. Some probably won't. But asbestos doesn't care about fairness or dosage thresholds. It's basically a numbers game. Enough fibers over enough time in the right person and boom, you get mesothelioma.

Your VSO is right about cumulative exposure. That's all that matters to the VA and to your body. Every day on that ship counted. The pleurectomy helped me and my surgeon said the staging looked manageable at the time. Recovery's been okay, some pain management but I'm moving better each week.

Don't spend too much time on the what-ifs about knowing sooner. The latency period means you couldn't have known. Focus on what you're doing now.

The straight answer is there's no safe amount. That's what the VA doc finally told me back in July after I kept asking the same thing. Any exposure over time can do it, especially in an enclosed space like a ship where you're breathing it in for years. On the Oriskany we didn't even know what we were dealing with half the time. Asbestos was just part of the job, wrapped around pipes in the engine room, crumbling in the berthing spaces.

The latency thing is real though. Mine didn't show up on scans until 2024 even though I've been retired since '91. That's 33 years of nothing, then boom. The VA screener caught it during a routine chest X-ray. I wasn't symptomatic, wasn't coughing blood or anything. Just a spot on the film that turned into a biopsy that confirmed it.

What helped me was stopping trying to figure out the exact threshold. Can't change the past 20 years on the boat anyway. The pleurectomy in August cleaned out a lot of the buildup in my chest cavity and I'm back doing light work around the house now. Recovery took longer than I expected, about 6 weeks before I felt halfway normal again, but the breathing got better.

Your stage II is manageable. Focus on the treatment plan your oncologist gives you and get your VA paperwork squared away if you haven't already. That's where the real battle is right now.

The short answer from everything I've read is no, there's no safe threshold. Even occupational exposure guidelines have this built-in assumption that some risk is acceptable, but that's different from saying there's an actual safe amount. The studies on shipyard workers show mesothelioma cases across the whole spectrum of exposure levels, which is honestly kind of the nightmare scenario because it means you can't point to a specific number and say "okay if I was below that I'm fine."

What I found when I was digging through the literature after my diagnosis is that cumulative exposure definitely matters, but so does fiber type and individual susceptibility. The Navy and shipbuilding used a lot of chrysotile and amosite back then, and amosite is particularly aggressive. You were on an active hull with constant disturbance of those materials over 20 years, so yeah, that's substantial exposure but it's not like there was some magic cutoff where you would've been safe.

My case is different obviously, factory work at Johns-Manville from 78 to 85, but what struck me was the latency period. I had my diagnosis in November 2025 and I'm looking at nearly 40 years between peak exposure and symptoms showing up. The thing that helped me stop spiraling about "should I have caught this sooner" was accepting that mesothelioma is basically a waiting game once you've had the exposure. It's not like you can feel it developing. The cells are doing their thing in your pleura or peritoneum and there's just no clinical sign until it's already established.

You got caught at stage II which is honestly better than a lot of people manage. That pleurectomy in August puts you in a position for more options moving forward. Have you gotten any information about whether HIPEC or chemotherapy are on the table for you, or is your team still in surveillance mode?