1. “Gut Microbiota Dysbiosis Is Associated with Elevated Bile Acids in Parkinson’s Disease”
by Peipei Li, Bryan A. Killinger, Elizabeth Ensink, Ian Beddows, Ali Yilmaz, Noah Lubben, Jared Lamp, Meghan Schilthuis, Irving E. Vega, Randy Woltjer et al.
Metabolites 2021, 11(1), 29; https://doi.org/10.3390/metabo11010029
Available online: https://www.mdpi.com/2218-1989/11/1/29

2. “Metabolomics and Lipidomics: Expanding the Molecular Landscape of Exercise Biology”
*Editor’s Choice Paper
by Mehdi R. Belhaj, Nathan G. Lawler and Nolan J. Hoffman
Metabolites 2021, 11(3), 151; https://doi.org/10.3390/metabo11030151
Available online: https://www.mdpi.com/2218-1989/11/3/151

3. “Salivary Metabolomics for Diagnosis and Monitoring Diseases: Challenges and Possibilities”
by Eelis Hyvärinen, Minttu Savolainen, Jopi J. W. Mikkonen and Arja M. Kullaa
Metabolites 2021, 11(9), 587; https://doi.org/10.3390/metabo11090587
Available online: https://www.mdpi.com/2218-1989/11/9/587

4. “Optical Microscopy-Guided Laser Ablation Electrospray Ionization Ion Mobility Mass Spectrometry: Ambient Single Cell Metabolomics with Increased Confidence in Molecular Identification”
*Editor’s Choice Paper
by Michael J. Taylor, Sara Mattson, Andrey Liyu, Sylwia A. Stopka, Yehia M. Ibrahim, Akos Vertes and Christopher R. Anderton
Metabolites 2021, 11(4), 200; https://doi.org/10.3390/metabo11040200
Available online: https://www.mdpi.com/2218-1989/11/4/200

5. “Metabolomics Diagnosis of COVID-19 from Exhaled Breath Condensate”
by Elettra Barberis, Elia Amede, Shahzaib Khoso, Luigi Castello, Pier Paolo Sainaghi, Mattia Bellan, Piero Emilio Balbo, Giuseppe Patti, Diego Brustia, Mara Giordano et al.
Metabolites 2021, 11(12), 847; https://doi.org/10.3390/metabo11120847
Available online: https://www.mdpi.com/2218-1989/11/12/847

6. “Plasma Metabolome and Lipidome Associations with Type 2 Diabetes and Diabetic Nephropathy”
by Yan Ming Tan, Yan Gao, Guoshou Teo, Hiromi W. L. Koh, E Shyong Tai, Chin Meng Khoo, Kwok Pui Choi, Lei Zhou and Hyungwon Choi
Metabolites 2021, 11(4), 228; https://doi.org/10.3390/metabo11040228
Available online: https://www.mdpi.com/2218-1989/11/4/228

7. “Contribution of Metabolomics to the Understanding of NAFLD and NASH Syndromes: A Systematic Review”
by Cristina Piras, Antonio Noto, Luciano Ibba, Martino Deidda, Vassilios Fanos, Sandro Muntoni, Vera Piera Leoni and Luigi Atzori
Metabolites 2021, 11(10), 694; https://doi.org/10.3390/metabo11100694
Available online: https://www.mdpi.com/2218-1989/11/10/694

8. “Metabolomics Studies in Psoriatic Disease: A Review”
by John Koussiouris, Nikita Looby, Melanie Anderson, Vathany Kulasingam and Vinod Chandran
Metabolites 2021, 11(6), 375; https://doi.org/10.3390/metabo11060375
Available online: https://www.mdpi.com/2218-1989/11/6/375