diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index 25f02f298..f7f8b94a1 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -67,6 +67,9 @@ Other Changes:
   triggered by some widgets e.g. Checkbox(), Selectable() and many others, which
   cleared ActiveId at the same time as editing. (#9028)
   Note that IsItemDeactivatedAfterEdit() was not affected, only IsItemEdited).
+- Demo: About Box: emit infos to convey when IM_ASSERT() macro is disabled,
+  - so users don't miss out on programming errors being reported.
+  - so it is included in config/build info submitted in new GitHub Issues.
 - Debug Tools: fixed DebugTextEncoding() potentially reading out of bounds
   if provided a trailing truncated UTF-8 sequence.
 - Backends:
diff --git a/imconfig.h b/imconfig.h
index 0e7cf6182..c6d9b8d5f 100644
--- a/imconfig.h
+++ b/imconfig.h
@@ -15,7 +15,8 @@
 #pragma once
 
 //---- Define assertion handler. Defaults to calling assert().
-// If your macro uses multiple statements, make sure is enclosed in a 'do { .. } while (0)' block so it can be used as a single statement.
+// - If your macro uses multiple statements, make sure is enclosed in a 'do { .. } while (0)' block so it can be used as a single statement.
+// - Compiling with NDEBUG will usually strip out assert() to nothing, which is NOT recommended because we use asserts to notify of programmer mistakes.
 //#define IM_ASSERT(_EXPR)  MyAssert(_EXPR)
 //#define IM_ASSERT(_EXPR)  ((void)(_EXPR))     // Disable asserts
 
diff --git a/imgui.h b/imgui.h
index c1e9a02eb..88c42ecb6 100644
--- a/imgui.h
+++ b/imgui.h
@@ -89,6 +89,7 @@ Index of this file:
 #endif
 
 // Helper Macros
+// (note: compiling with NDEBUG will usually strip out assert() to nothing, which is NOT recommended because we use asserts to notify of programmer mistakes.)
 #ifndef IM_ASSERT
 #include <assert.h>
 #define IM_ASSERT(_EXPR)            assert(_EXPR)                               // You can override the default assert handler by editing imconfig.h
diff --git a/imgui_demo.cpp b/imgui_demo.cpp
index 3c3900b43..a43fd2487 100644
--- a/imgui_demo.cpp
+++ b/imgui_demo.cpp
@@ -8185,6 +8185,25 @@ void ImGui::ShowAboutWindow(bool* p_open)
         ImGui::Text("define: __EMSCRIPTEN__");
         ImGui::Text("Emscripten: %d.%d.%d", __EMSCRIPTEN_major__, __EMSCRIPTEN_minor__, __EMSCRIPTEN_tiny__);
 #endif
+#ifdef NDEBUG
+        ImGui::Text("define: NDEBUG");
+#endif
+
+        // Heuristic to detect no-op IM_ASSERT() macros
+        // - This is designed so people opening bug reports would convey and notice that they have disabled asserts for Dear ImGui code.
+        // - 16 is > strlen("((void)(_EXPR))") which we suggested in our imconfig.h template as a possible way to disable.
+        int assert_runs_expression = 0;
+        IM_ASSERT(++assert_runs_expression);
+        int assert_expand_len = (int)strlen(IM_STRINGIFY(IM_ASSERT(true)));
+        bool assert_maybe_disabled = (!assert_runs_expression || assert_expand_len <= 16);
+        ImGui::Text("IM_ASSERT: runs expression: %s. expand size: %s%s",
+            assert_runs_expression ? "OK" : "KO", (assert_expand_len > 16) ? "OK" : "KO", assert_maybe_disabled ? " (MAYBE DISABLED?!)" : "");
+        if (assert_maybe_disabled)
+        {
+            ImGui::SameLine();
+            HelpMarker("IM_ASSERT() calls assert() by default. Compiling with NDEBUG will usually strip out assert() to nothing, which is NOT recommended because we use asserts to notify of programmer mistakes!");
+        }
+
         ImGui::Separator();
         ImGui::Text("io.BackendPlatformName: %s", io.BackendPlatformName ? io.BackendPlatformName : "NULL");
         ImGui::Text("io.BackendRendererName: %s", io.BackendRendererName ? io.BackendRendererName : "NULL");