Complex sentence: Advocates have argued that research had missed some key features of TCM, such as the subtle interrelationships between ingredients, however, it is largely pseudoscience, with no valid mechanism of action for the majority of its treatments.
Split into simpler sentences: Advocates have argued that research had missed some key features of TCM, such as the subtle interrelationships between ingredients. However, it is largely pseudoscience, with no valid mechanism of action for the majority of its treatments.