diff --git a/src/bot/bot.py b/src/bot/bot.py
index 7ce7535..a91a4dd 100644
--- a/src/bot/bot.py
+++ b/src/bot/bot.py
@@ -851,6 +851,27 @@ async def cmd_help(update: Update, ctx: ContextTypes.DEFAULT_TYPE):
 
 # ─── Bot setup ────────────────────────────────────────────────────────────────
 
+async def _mark_interrupted_on_startup(app: Application) -> None:
+    """Las tareas de research viven solo en memoria (_active_tasks): un
+    reinicio del pod las mata sin tocar la DB, y sus sesiones quedan en
+    'running' para siempre — parecen activas en /status y get_active_session.
+    """
+    db_conn = await get_db()
+    try:
+        cursor = await db_conn.execute(
+            "UPDATE research_sessions SET status = ?, updated_at = ? WHERE status = ?",
+            (ResearchStatus.INTERRUPTED, time.time(), ResearchStatus.RUNNING),
+        )
+        await db_conn.commit()
+        if cursor.rowcount:
+            logger.info("Orphaned running sessions marked interrupted",
+                        count=cursor.rowcount)
+    except Exception as e:
+        logger.warning("Interrupted-mark failed — bot continues", error=str(e))
+    finally:
+        await db_conn.close()
+
+
 async def _purge_on_startup(app: Application) -> None:
     db_conn = await get_db()
     try:
@@ -994,6 +1015,7 @@ async def _start_scheduler(app: Application) -> None:
 
 
 async def _on_startup(app: Application) -> None:
+    await _mark_interrupted_on_startup(app)
     await _purge_on_startup(app)
     await _start_scheduler(app)
 
diff --git a/src/db/database.py b/src/db/database.py
index 09d4102..7af66b9 100644
--- a/src/db/database.py
+++ b/src/db/database.py
@@ -18,6 +18,7 @@ class ResearchStatus(str, Enum):
     SATURATED = "saturated"
     FINISHED = "finished"
     ERROR = "error"
+    INTERRUPTED = "interrupted"  # el pod se reinició con el research en marcha
 
 
 class OutputType(str, Enum):