Some forms of organicism have intellectually and politically controversial, or suspect, associations. "Holism" in terms of the doctrine that the whole is more than the sum of its parts, often used synonymously with organicism, or as a broader category under which organicism falls, has been co-opted in recent decades by "holistic medicine" and by New Age Thought. German Nazism appealed to organicist and holistic doctrines, discrediting for many, in retrospect, the original organicist doctrines. (See Anne Harrington). Soviet Dialectical Materialism also made appeals to an holistic and organicist approach, stemming from Hegel via Karl Marx's co-worker Friedrich Engels, again giving a controversial political association to organicism.