Chewing gum alleviates negative mood and reduces cortisol during acute laboratory psychological stress

The Design and Procedure sections (pages unavailable) describe a randomized crossover study of chewing versus not chewing gum during 20-minute laboratory stress tasks, not 2–4 weeks of IBMT. The Discussion (page unavailable) attributes baseline cortisol changes largely to the morning diurnal fall, rather than to an IBMT intervention. (LLM, conf=0.87)

Checked by a reasoning model — may be wrong.

The Methods (sections 2.3 and 2.6; page unavailable) describe a trial of chewing versus not chewing gum during a 20-minute multitasking stressor, not a brief iBMt intervention. The paper reports mood and cortisol outcomes, but attributes them to the gum-chewing and stress conditions, contrary to identifying this trial as evidence about iBMt. (LLM, conf=0.85)

Checked by a reasoning model — may be wrong.

The Discussion reports significantly reduced salivary cortisol when participants chewed gum during acute laboratory stress, supporting the general possibility of modulating an endocrine stress response. It does not study iBMt, so it cannot establish that iBMt provides this approach or how quickly it might work. (LLM, conf=0.85)

The Procedure and Results sections report salivary cortisol measurements before and after a multitasking stressor, and lower cortisol during gum chewing than without chewing. They do not describe a three-stage stress intervention test or establish that its cortisol pattern matches the citing study’s pattern. (LLM, conf=0.78)

The Results ([Figure 3 around here], page unavailable) report improved alertness, lower stress and anxiety, and lower salivary cortisol while chewing gum; the Discussion reports improved overall task performance. But the paper does not establish positive brain changes or an interaction between the central and autonomic nervous systems. It says the mechanisms are unknown and discusses possible physiological explanations. (LLM, conf=0.86)

The Results and Discussion passages concern gum chewing, salivary cortisol, and responses to a laboratory stressor. Searches for iBMt, meditation training, and training dose found no passage addressing whether iBMt changes basal endocrine function or produces larger acute effects with more training. Page numbers were not available in our copy. (LLM, conf=0.78)

The Procedure (§2.6; page not provided) compares chewing gum with no chewing during a laboratory stressor, and the Discussion (§4; page not provided) reports effects of gum chewing on stress. Our copy does not address integrative body-mind training, self-regulation after that training, or a relaxation-training control; searches for those terms found no supporting passage. (LLM, conf=0.76)