Original ResearchPublished 9 October 2026Development and external validation of an explainable machine learning model for identifying depressive symptoms in middle-aged and older adults with low haemoglobin: a prediction-model studyQilong Wang · Juan He · Siheng Ma · Jianpeng Zhao · Jingjing Zong · Dongmei Ma · Sha Liu · Lei Zhang · Xin Qi · Dongrong ZhaoFrontiers in Nutritiondoi 10.3389/fnut.2026.1846276
Original ResearchPublished 25 August 2026Adaptive immune cells and kidney function in older adults: sex-specific associations in the health and retirement study (HRS)Shannon M. Sullivan · Bibin Joseph · Shweta Sharma · Weihua Guan · Amy B. Karger · Jessica Faul · Bharat ThyagarajanFrontiers in Agingdoi 10.3389/fragi.2026.1882462
Original ResearchPublished 14 January 2026Financial literacy may not directly drive investment participation or retirement planning in JapanYi Jiang · Shohei ShimizuFrontiers in Behavioral Economicsdoi 10.3389/frbhe.2025.1725333
Behavioral EconomicsPublished 22 April 2025Subjective financial scarcity today = objective financial scarcity in the future? The impact of subjective financial scarcity on saving for retirementKristjan Pulk · Thomas PostFrontiers in Behavioral Economicsdoi 10.3389/frbhe.2025.1379577
