Survival without medication after a heart attack is highly unpredictable and extremely risky. It depends on the extent of heart muscle damage. While some individuals with minimal damage might survive for years with strict lifestyle changes, they remain at an exceptionally high risk. Without vital medications like blood thinners, beta-blockers, and statins, the risk of a second, often fatal heart attack, progressive heart failure, or lethal heart rhythm disturbances increases dramatically. This can lead to sudden death within days, weeks, or months. Skipping prescribed post-heart attack medications is highly dangerous and significantly shortens life expectancy.