A new prospective study of over 500,000 UK Biobank participants has uncovered a notable link between atherosclerotic cardiovascular disease (ASCVD) and amyotrophic lateral sclerosis (ALS). People with a history of ASCVD were 43% more likely to develop ALS compared to those without it — with coronary artery disease (CAD) and ischemic stroke (IS) driving the association. Peripheral artery disease, however, showed no significant link.

The findings were especially pronounced in younger patients. Among those aged 65 and under, a history of ASCVD raised ALS risk by 65%, while ischemic stroke more than doubled it. Encouragingly, the reverse also held true: individuals with high cardiovascular health scores (using the Life's Essential 8 framework) had a 48% lower ALS risk than those with poor cardiovascular health.

By the Numbers:

• 675 out of 502,279 participants developed ALS over ~14 years of follow-up
• ASCVD → 43% higher ALS risk (aHR 1.43)
• Ischemic stroke → 82% higher ALS risk (aHR 1.82)
• High cardiovascular health → 48% lower ALS risk (aHR 0.52)
• Each 1-point increase in LE8 score → 14% lower ALS risk

Why it matters: This research suggests that cardiovascular health may play a meaningful role in ALS susceptibility — a disease with no cure and limited treatments. If confirmed, it opens the door to potential prevention strategies through heart-health optimization, particularly for younger adults.