User talk:KatharinaStevens(UU)

Vitamin D edits
I looked at the reference you added and it appeared to me that the recommendation was 400 IU for children and adults up to age 75, 800 IU for adults 75 and older. That does not match the 300-400 IU you had written. If I am wrong in my reading of the reference, please reverse my change to your edit.

Your other edit was reverted (reversed) by a different editor. Medical and health topics require secondary sources as references instead of primary (see WP:MEDRS). That means no to in vitro, no animal, no clinical trials; yes to meta-analyses, systematic reviews, and reviews published in quality journals. And referencing your own work is considered bad manners. David notMD (talk) 16:51, 19 October 2018 (UTC)