<![CDATA[Degenerative diseases such as hypertension, diabetes mellitus, hypercholesterolemia, and gout are common public health problems, particularly among older adults. Residents of Karang Sari Village, Jati Agung District, South Lampung Regency, have limited knowledge of their risk factors, symptoms, and prevention. This Community Service activity aimed to improve community knowledge through education on rhizome herbal plants, including ginger (Zingiber officinale), turmeric (Curcuma longa), and Java turmeric (Curcuma xanthorrhiza), as promotive and preventive resources. A pre-experimental one-group pretest-posttest design was applied to 13 purposively selected participants. Education used PowerPoint, posters, and leaflets, accompanied by a demonstration of rhizome processing into herbal beverages. Data were analyzed using Shapiro-Wilk and Wilcoxon Signed Rank tests. Normality results indicated non-normal data (pretest p = 0.029; posttest p = 0.009). The Wilcoxon test showed Z = -2.388 and p = 0.017, indicating a significant difference between pretest and posttest scores. Seven participants improved and none declined. The activity increased community knowledge regarding prevention of degenerative diseases through locally available rhizome herbal plants.]]>
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