diff --git a/src/app/api/insights/correlations/route.ts b/src/app/api/insights/correlations/route.ts
index 245c33421..0e06c3503 100644
--- a/src/app/api/insights/correlations/route.ts
+++ b/src/app/api/insights/correlations/route.ts
@@ -85,8 +85,8 @@ export const GET = apiHandler(async () => {
   // EVERY mount. Cache the built body in the analytics bucket (60 s fresh /
   // 1 h stale — the bucket defaults are exactly the contract this read wants).
   // Eviction truth comes free: every measurement / mood / medication /
-  // illness / custom-metric write sweeps the `${userId}|` prefix in this
-  // bucket, and a pattern dismiss goes through
+  // illness / nutrient / custom-metric write sweeps the `${userId}|` prefix
+  // in this bucket, and a pattern dismiss goes through
   // `invalidateUserCorrelationPatterns`, which sweeps it too. The
   // `syncAcceptedPatterns` calls are DB writes and live INSIDE the builder,
   // so a cache hit performs no write on the read path.
diff --git a/src/app/api/nutrients/batch/__tests__/route.test.ts b/src/app/api/nutrients/batch/__tests__/route.test.ts
index 63079a20b..1c8f17cf4 100644
--- a/src/app/api/nutrients/batch/__tests__/route.test.ts
+++ b/src/app/api/nutrients/batch/__tests__/route.test.ts
@@ -47,7 +47,7 @@ vi.mock("@/lib/idempotency", () => ({
 }));
 vi.mock("@/lib/logging/transports", () => ({ emitIfSampled: vi.fn() }));
 vi.mock("@/lib/cache/invalidate", () => ({
-  invalidateUserDashboardSnapshot: vi.fn(),
+  invalidateUserHealthContext: vi.fn(),
 }));
 vi.mock("next/headers", () => ({
   headers: vi.fn(async () => ({ get: () => null })),
@@ -65,7 +65,7 @@ import { getSession } from "@/lib/auth/session";
 import { checkRateLimit } from "@/lib/rate-limit";
 import { requireModuleEnabled } from "@/lib/modules/gate";
 import { auditLog } from "@/lib/auth/audit";
-import { invalidateUserDashboardSnapshot } from "@/lib/cache/invalidate";
+import { invalidateUserHealthContext } from "@/lib/cache/invalidate";
 import { nutrientEntryResultSchema } from "@/lib/validations/nutrients";
 
 const SESSION_OK = {
@@ -317,10 +317,11 @@ describe("POST /api/nutrients/batch — write semantics", () => {
     expect(prisma.nutrientIntakeDay.update).not.toHaveBeenCalled();
   });
 
-  // v1.30.3 — a landed row must evict the dashboard snapshot so
-  // the water/nutrient tile reflects the new total on the very next read,
-  // matching the manual water POST's own posture (`nutrients/water/route.ts`).
-  it("evicts the dashboard snapshot when a row lands", async () => {
+  // v1.30.3 — a landed row must evict the record's analytics cells so
+  // the water/nutrient tile and the correlation scan reflect the new total
+  // on the very next read, matching the manual water POST's own posture
+  // (`nutrients/water/route.ts`).
+  it("evicts the analytics cells when a row lands", async () => {
     const day = recentDay();
     const res = await POST(
       postReq({
@@ -328,11 +329,11 @@ describe("POST /api/nutrients/batch — write semantics", () => {
       }),
     );
     expect(res.status).toBe(200);
-    expect(invalidateUserDashboardSnapshot).toHaveBeenCalledTimes(1);
-    expect(invalidateUserDashboardSnapshot).toHaveBeenCalledWith("user-1");
+    expect(invalidateUserHealthContext).toHaveBeenCalledTimes(1);
+    expect(invalidateUserHealthContext).toHaveBeenCalledWith("user-1");
   });
 
-  it("does NOT evict the dashboard snapshot when nothing lands (every entry skipped)", async () => {
+  it("does NOT evict the analytics cells when nothing lands (every entry skipped)", async () => {
     const res = await POST(
       postReq({
         entries: [
@@ -348,7 +349,7 @@ describe("POST /api/nutrients/batch — write semantics", () => {
     const body = (await res.json()) as BatchResponse;
     expect(body.data.inserted).toBe(0);
     expect(body.data.updated).toBe(0);
-    expect(invalidateUserDashboardSnapshot).not.toHaveBeenCalled();
+    expect(invalidateUserHealthContext).not.toHaveBeenCalled();
   });
 
   it("reports updated (never duplicate) when the composite key already exists", async () => {
diff --git a/src/app/api/nutrients/batch/route.ts b/src/app/api/nutrients/batch/route.ts
index ac2d88f2c..45823fe65 100644
--- a/src/app/api/nutrients/batch/route.ts
+++ b/src/app/api/nutrients/batch/route.ts
@@ -44,7 +44,7 @@ import {
 import { withIdempotency } from "@/lib/idempotency";
 import { checkRateLimit } from "@/lib/rate-limit";
 import { requireModuleEnabled } from "@/lib/modules/gate";
-import { invalidateUserDashboardSnapshot } from "@/lib/cache/invalidate";
+import { invalidateUserHealthContext } from "@/lib/cache/invalidate";
 import { NUTRIENT_CATALOG } from "@/lib/nutrients/catalog";
 import { maxAcceptableNutrientDay } from "@/lib/nutrients/day-bounds";
 import {
@@ -347,12 +347,13 @@ async function postBatch(request: NextRequest): Promise<Response> {
 
   if (inserted + updated > 0) {
     // v1.30.3 — a landed row changes the dashboard's water/nutrient
-    // tile; without this the snapshot kept serving the pre-sync figure
-    // until the analytics fresh TTL lapsed (~3 min). Mirrors the manual
-    // water POST's own hard-evict (`nutrients/water/route.ts`) so an
-    // Apple-Health-synced total reflects on the very next dashboard read,
-    // same as a manually logged one.
-    invalidateUserDashboardSnapshot(user.id);
+    // tile and the correlation scan (water, caffeine and nutrient channels)
+    // behind the metric pages and the Coach read; without this they kept
+    // serving the pre-sync figure until the analytics fresh TTL lapsed.
+    // Mirrors the manual water POST's own hard-evict
+    // (`nutrients/water/route.ts`) so an Apple-Health-synced total
+    // reflects on the very next read, same as a manually logged one.
+    invalidateUserHealthContext(user.id);
   }
 
   annotate({
diff --git a/src/app/api/nutrients/water/__tests__/route.test.ts b/src/app/api/nutrients/water/__tests__/route.test.ts
index b1ad8c701..c46353725 100644
--- a/src/app/api/nutrients/water/__tests__/route.test.ts
+++ b/src/app/api/nutrients/water/__tests__/route.test.ts
@@ -26,7 +26,7 @@ vi.mock("@/lib/modules/gate", () => ({
 }));
 
 vi.mock("@/lib/cache/invalidate", () => ({
-  invalidateUserDashboardSnapshot: vi.fn(),
+  invalidateUserHealthContext: vi.fn(),
 }));
 
 vi.mock("@/lib/auth/session", () => ({ getSession: vi.fn() }));
@@ -59,7 +59,7 @@ import { apiError } from "@/lib/api-response";
 import { getSession } from "@/lib/auth/session";
 import { checkRateLimit } from "@/lib/rate-limit";
 import { requireModuleEnabled } from "@/lib/modules/gate";
-import { invalidateUserDashboardSnapshot } from "@/lib/cache/invalidate";
+import { invalidateUserHealthContext } from "@/lib/cache/invalidate";
 import { NUTRIENT_CATALOG } from "@/lib/nutrients/catalog";
 import { auditLog } from "@/lib/auth/audit";
 
@@ -194,7 +194,7 @@ describe("POST /api/nutrients/water", () => {
       },
       update: { amount: { increment: 250 } },
     });
-    expect(invalidateUserDashboardSnapshot).toHaveBeenCalledWith("user-1");
+    expect(invalidateUserHealthContext).toHaveBeenCalledWith("user-1");
   });
 
   it("set mode overwrites the MANUAL row's amount instead of incrementing", async () => {
diff --git a/src/app/api/nutrients/water/route.ts b/src/app/api/nutrients/water/route.ts
index 3377f3bd7..daf53e56a 100644
--- a/src/app/api/nutrients/water/route.ts
+++ b/src/app/api/nutrients/water/route.ts
@@ -26,7 +26,7 @@ import { parseJsonBody } from "@/lib/api/body";
 import { withIdempotency } from "@/lib/idempotency";
 import { checkRateLimit } from "@/lib/rate-limit";
 import { requireModuleEnabled } from "@/lib/modules/gate";
-import { invalidateUserDashboardSnapshot } from "@/lib/cache/invalidate";
+import { invalidateUserHealthContext } from "@/lib/cache/invalidate";
 import { NUTRIENT_CATALOG } from "@/lib/nutrients/catalog";
 import { maxAcceptableNutrientDay } from "@/lib/nutrients/day-bounds";
 import { nutrientWaterWriteSchema } from "@/lib/validations/nutrients";
@@ -138,10 +138,11 @@ async function postWater(request: NextRequest): Promise<Response> {
     });
   }
 
-  // Interactive single-entry write — hard-evict (not mark-stale) so the
-  // dashboard water tile reflects the new total on the very next read,
-  // matching the mood / medication / measurement posture.
-  invalidateUserDashboardSnapshot(user.id);
+  // Interactive single-entry write: hard-evict (not mark-stale) the record's
+  // analytics cells, so the dashboard water tile and the correlation scan
+  // behind the metric pages and the Coach read reflect the new total on the
+  // very next read, matching the mood / medication / measurement posture.
+  invalidateUserHealthContext(user.id);
 
   // A health-data write earns a durable row, like every other one. This was
   // the last manual write in the nutrients family that only reached the wide
diff --git a/src/lib/insights/derived/coach-read.ts b/src/lib/insights/derived/coach-read.ts
index 0b152516f..6f3736560 100644
--- a/src/lib/insights/derived/coach-read.ts
+++ b/src/lib/insights/derived/coach-read.ts
@@ -100,8 +100,9 @@ function latestDay(
  * channel over 180 days and does not depend on the metric, so without the cell
  * each metric page paid the whole scan again for the one line it picks. Same
  * cell contract as `/api/insights/correlations`: measurement, mood, medication,
- * illness, custom-metric and pattern writes sweep the `${userId}|` prefix, and
- * the switched-off modules are part of the key. A failed read is not cached.
+ * illness, nutrient, custom-metric and pattern writes sweep the `${userId}|`
+ * prefix, and the switched-off modules are part of the key. A failed read is
+ * not cached.
  */
 async function readDrivers(
   userId: string,