Purpose of review We describe the recent advances in rehabilitation nutrition, which is especially important for disabled or frail older individuals. Recent findings Recent evidence pertaining to rehabilitation nutrition conducted in rehabilitation wards and acute care hospitals has been accumulating. The combination of rehabilitation nutrition and rehabilitation pharmacotherapy is important for eliciting higher functions. The 2020 update of the clinical practice guidelines for rehabilitation nutrition provides a weak recommendation for enhanced nutritional care for patients with cerebrovascular disease, hip fracture, cancer, or acute illness who are undergoing rehabilitation. Rehabilitation nutritional care process and the International Classification of Functioning, Disability and Health-Dietetics are used to implement high-quality rehabilitation nutrition. Aggressive nutrition therapy incorporates the daily energy expenditure plus daily energy accumulation to increase body weight and muscle mass. Preventing and treating sarcopenic dysphagia should include iatrogenic sarcopenia prevention and aggressive nutrition therapy. The diagnosis criteria for respiratory sarcopenia and sarcopenic respiratory disability have been established. Summary The International Association of Rehabilitation Nutrition and Total Nutrition Therapy Rehabilitation program may contribute to international expansion of rehabilitation nutrition. Improving evidence–practice gaps in rehabilitation nutrition and increasing national health insurance coverage of aggressive nutrition therapy and rehabilitation nutrition teams are warranted.

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The aim of the present study was to investigate whether CYP2C19 polymorphism status and gastric emptying are related to healing in patients with gastric ulcers. We studied the CYP2C19 status in seven patients with proton pump inhibitor (PPI)-resistant ulcers, 21 with PPI-sensitive ulcers and 46 healthy volunteers using polymerase chain reaction restriction fragment length polymorphism to detect CYP2C19m1 mutation in exon 5 and CYP2C19m2 mutation in exon 4. Gastric emptying was evaluated using the 13 C-acetate breath test. The frequency of phenotypes, indicated by genotypes, did not differ significantly between the three patient groups. The peak time of 13 C excretion in patients with PPIresistant ulcers was significantly longer than that of patients with PPI-sensitive ulcers and healthy volunteers. Our results suggest that rate of gastric emptying, but not CYP2C19 polymorphism, is likely to be an important factor in the delayed healing of patients with PPI-resistant gastric ulcer.