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Though not an issue for the vast majority of users, this may cause interactions with certain medications or unwanted effects in individuals with certain health conditions
10.1038/s41586-019-1705-2 18 BerteroT.OldhamW
Supports optimal functioning of the immune system
There were 23 clinical studies published between 2020 and 2025 that support collagen as a nutraceutical treatment that showed improvement in various skin attributes, but investigations are lacking on collagens effectiveness on scalp, hair, and nail health, which warrants further examination
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