Published August 5, 2026, based on a Military Times report by Patricia Kime, published August 4, 2026.
A new study is putting a number on something a lot of veterans have never heard: which branch you served in changes your odds of developing ALS. If you served in the Air Force, Navy, or Coast Guard — or you served as an officer — that number is higher than you'd think. And if you or someone you served with is ever diagnosed with ALS, there's a piece of VA law that skips the hardest, slowest part of every disability claim entirely.
The Problem: a rare disease, and a branch-by-branch risk gap
Researchers from the Harvard T.H. Chan School of Public Health, the Department of Veterans Affairs, and other institutions reviewed 9.9 million veteran records in the VA medical system from 2000 to 2024. Of those, 14,419 veterans had received an ALS (amyotrophic lateral sclerosis) diagnosis — a rare disease that strikes about 5,000 Americans a year, according to the CDC. It's also known as Lou Gehrig's disease.
Using Army veterans as the baseline and adjusting for sex, race, and ethnicity, the study — published in the journal Neurology — found:
- Air Force veterans: 29% higher ALS rate than Army veterans
- Coast Guard veterans: 26% higher
- Navy veterans: 15% higher
- Marine Corps veterans: 22% lower
- Officers overall: 64% higher than enlisted personnel
- Women officers specifically: 72% higher
The gap was most visible in men 61 and younger and less visible in men over 75. Study author Marc Weisskopf, of Harvard's T.H. Chan School of Public Health, said the differences suggest that officers and those serving in the Air Force, Navy, or Coast Guard may have been exposed to military environments that raise ALS risk — though researchers stopped short of naming a specific cause. Burn pits, jet fuel, aircraft exhaust, heavy metals, and other toxic exposures are the leading theories, but no single trigger has been proven.
One important caveat the researchers themselves flagged: ALS remains rare. Less than 0.2% of the 9.9 million veteran records reviewed had an ALS diagnosis. A statistically higher rate is not the same as a high absolute risk. But military personnel overall are diagnosed with ALS at nearly twice the rate of civilians — which is exactly why VA law already treats this disease differently from almost everything else it rates.
How VA rates ALS — and why it's different from every other claim
Under 38 CFR § 3.318, a veteran diagnosed with ALS at any time after discharge is presumed to have a service-connected disability — full stop. There is no requirement to prove a nexus (the medical link between your service and your condition) that almost every other VA claim demands. You don't have to show what caused it, and you don't have to show how long ago you got out.
| What VA normally requires | What ALS claims require |
|---|---|
| Current diagnosis | Current diagnosis (still required) |
| An in-service event or exposure | Not required — presumed |
| A medical nexus opinion linking the two | Not required — presumed by law |
| Rating tied to severity of symptoms | Minimum rating is 100%, regardless of severity |
The only three things that can block the presumption: affirmative evidence ALS was not incurred in or aggravated by service, affirmative evidence it resulted from willful misconduct, or the veteran having fewer than 90 continuous days of active service. Absent one of those, a diagnosis is enough.
The minimum ALS rating is 100% Permanent and Total. At the current 2026 VA compensation rate, that's $3,938.58 a month for a veteran alone, or $4,158.17 a month with a spouse (effective December 1, 2025, verified against VA.gov's current rate table). As the disease progresses, many veterans with ALS also qualify for Special Monthly Compensation on top of the base 100% rate, for things like loss of use of limbs or the need for aid and attendance.
The AVOY System: what to actually do with this information
Most readers of a study like this will never develop ALS — it's rare, and that's a good thing. But this story is worth acting on in three specific ways.
1. Take new or unexplained neurological symptoms seriously — especially if you're a younger veteran or former officer
ALS symptoms often start small: muscle twitching, weakness in a hand or foot, slurred speech, or fatigue that doesn't make sense. Because the presumption applies no matter how many years have passed since discharge, there is zero downside to getting persistent neurological symptoms checked by a neurologist rather than waiting to see if they resolve. Early diagnosis also means earlier access to treatment and VA services — ALS is aggressive, and time matters clinically, not just administratively.
2. If you or a fellow veteran gets an ALS diagnosis, file immediately — the hardest part is already done
Normally, the AVOY method starts with "organize before you file" — build your evidence, your nexus, your buddy statements, before you submit. ALS is the exception. The nexus is presumed by law. What you still need is straightforward:
- A current, documented ALS diagnosis from a neurologist (clinical exam findings, EMG/nerve conduction studies, or both)
- Proof of 90+ continuous days of active service
- DD-214 or other separation documents
File a VA Form 21-0966 Intent to File the same day if you can't submit the full claim immediately — it locks in your effective date while paperwork catches up. Ask a VA-accredited Veteran Service Officer (VSO) to flag the claim for expedited handling; VA has historically prioritized ALS claims given the disease's rapid progression, though processing timelines can vary and should be confirmed directly with your VSO or VA.gov.
3. Know what comes after the rating
Because ALS is fatal and often progresses quickly, the 100% P&T rating is usually just the first step. Families should also look into Special Monthly Compensation as symptoms advance, and — because this disease can take a veteran's life — Dependency and Indemnity Compensation (DIC) for surviving spouses and dependents down the road. Planning for both now, rather than scrambling later, is part of taking care of the whole family, not just the veteran.
ALS is one of a small handful of conditions where VA skips the nexus fight entirely — it's the same underlying logic behind the PACT Act's presumptive toxic-exposure list. If you're building any other claim from scratch, here's where the evidence rules are different: PACT Act Presumptive Conditions: A Veteran's Guide to Burn Pit and Toxic Exposure Claims. If a rating comes in below 100% for a condition that still keeps you from working, see TDIU VA Benefits Guide: How Total Disability Individual Unemployability Works. And once any decision letter arrives, know how to read it before you accept it at face value: How to Read Your VA Decision Letter (Line by Line).
The Access Point
Get the free VA Evidence Checklist. The exact documents VA looks for, organized by condition, so any claim — presumptive or not — goes in complete the first time.
→ Get the Free Evidence Checklist
Ask AVOY Veteran Navigator AI™. Plain-language educational guidance on presumptive conditions, ratings, and next steps for you or a family member — any time of day.
Recommended reading
VA Disability Claims for Beginners — the step-by-step guide to filing your first VA disability claim, including how presumptive conditions like ALS work, what proof VA actually needs, and how to avoid the mistakes that slow a claim down.
Frequently asked questions
Do I need to prove my ALS was caused by my military service?
No. Under 38 CFR § 3.318, ALS diagnosed at any time after discharge is presumed to be service-connected. You still need a current diagnosis and proof of 90+ continuous days of active service, but you do not need a nexus opinion connecting the disease to a specific in-service event.
What rating will I get for ALS?
The minimum rating for ALS under VA's rating schedule is 100% Permanent and Total, regardless of how mild symptoms are at diagnosis. Additional Special Monthly Compensation may apply as the disease progresses.
Does it matter which branch I served in or how long ago I got out?
No — the presumption applies to every branch and has no time limit after discharge. The new study found ALS rates vary by branch and rank, but the VA presumption itself applies equally to all veterans who meet the 90-day active-service requirement.
Is this new study a change to VA law?
No. This is a research finding published in the journal Neurology, not a regulatory or legislative change. The presumptive ALS regulation, 38 CFR § 3.318, has been in effect since 2008. The study adds new data about who is affected most, but VA's rating law is unchanged.
What should I do if I notice symptoms like muscle weakness, twitching, or slurred speech?
See a neurologist as soon as possible. This is general educational information, not medical advice — a proper diagnosis requires clinical evaluation. If you're a veteran and are diagnosed with ALS, the service-connection presumption applies regardless of how long ago you separated.
Educational information only — not legal, medical, or financial advice or claim representation. AVOY is not affiliated with or endorsed by the U.S. Department of Veterans Affairs. Filing for VA benefits is free, and a VA-accredited VSO can help you at no cost. Always verify current rules, rates, and deadlines at VA.gov. In crisis? Dial 988, then press 1.
Source: Military Times, "Risk of developing ALS varies by service, study finds," by Patricia Kime, August 4, 2026, citing research published in the journal Neurology.
