To batch rename incrementally. Select a group of items, and then, on the Action menu, click Batch Rename. On the Rename Options menu, select Date. This command automatically inserts the IPTC Date Created, the EXIF Capture Date, or the file Creation Date, in that order.
However, PTH can change due to renal function, exercise level, the time of day, or even diet. There has been no consensus on the optimal level of vitamin D intake to reduce PTH, and this is why many laboratories report the normal range of vitamin D to be so wide (20 to 40 ng/ml, or in some cases, 50 to 100 nmol).
Over the past few decades, the normal blood level of vitamin D (25-OH vitamin D) was based on the amount needed to keep PTH from becoming abnormally high. Again, PTH at high levels can cause calcium loss from the bone, so this would make sense that vitamin D could maintain or improve bone health at these levels.