Acknowledgements
We thank the DIRECT PLUS participants for their valuable contributions. We thank the California Walnut Commission, Wissotzky Tea Company, and Hinoman, Ltd. for kindly supplying food items for this study. We thank Efrat Pupkin, Eyal Goshen, Avi Ben Shabat, Evyatar Cohen from the Nuclear Research Center Negev, Liz Shabtai, and Yulia Kovshan from the Ben-Gurion University of the Negev for their valuable contributions to this study.