Healthy Adult Participants

• Ragle Human Nutrition Center — Davis, California, United States
• UC Davis Ragle Human Nutrition Research Center — Davis, California, United States

• Rukiye Duman — Istanbul, AVCILAR, Turkey (Türkiye)

• Shandong University of Qilu Hospital — Jinan, Shandong, China

• OneCarbon — Cambridge, Cambridgeshire, United Kingdom

• Zuckerberg San Francisco General Hospital — San Francisco, California, United States

• IU Health Neuroscience Center — Indianapolis, Indiana, United States

Not specified

• University Hospital Zurich, Department of Neurology — Zurich, Canton of Zurich, Switzerland

Not specified

• The University of Alberta North Campus — Edmonton, Alberta, Canada