How can you prevent ALS - resources?
Last updated September 7, 2026.
No, there is no proven way to prevent ALS, because most cases have no identified cause and the strongest known risk factors are age, sex, and genetics. Most ALS is sporadic, meaning it appears in people with no family history. A smaller share is familial and linked to inherited gene changes such as C9orf72 or SOD1, which is where genetic counseling becomes useful. Smoking is the environmental exposure most consistently tied to higher ALS risk, so quitting is the one habit with real support behind it. Following safety rules for chemical and metal exposures at work is sensible for your health overall, though it has not been shown to prevent ALS. No supplement, diet, or exercise plan prevents the disease, and products marketed that way are not backed by evidence.
What to do
- Stop smoking: Quitting is the only lifestyle change with consistent evidence linking it to lower ALS risk, and it helps your lungs, heart, and blood vessels at the same time.
- Ask about family history: If a close relative had ALS or frontotemporal dementia, ask your clinician about a referral for genetic counseling and testing.
- Follow exposure controls at work: Use the protective equipment and handling rules for solvents, pesticides, and metals in your job, and report gaps to your safety officer.
- Skip prevention supplements: No vitamin, antioxidant, or specialty product has been shown to prevent ALS, and high-dose supplements can interact with medicines you already take.
- Act on persistent symptoms: Muscle weakness, twitching, slurred speech, or swallowing trouble that lasts more than a few weeks needs a neurologist, not watchful waiting.
- Use trusted sources: Stick to MedlinePlus, CDC, and NHS pages for ALS information, and ask us to walk you through anything that is unclear in a free consult.