Actas Dermosifiliograficas in February 2023, notes that more research is needed on oral collagen supplementations benefits to the skin, since generally small studies have been done mostly on female participants

Intestinal injuries can be caused by numerous factors: Hemorrhoids: enlarged blood vessels in or around the anus Colon polyps: a small clump of cells that form in the colon Anal fissures: a tear in the lining of the anus Diverticular bleeding: diverticula (small pouches) in the colon rupture, leading to diverticulitis Tumors: abnormal growth of tissue, may be benign or malignant Ulcers: intestinal sores common in IBD, may also be present in the esophagus, stomach, duodenum, colon or rectum Excessive straining: too much force to relieve solid waste Arteriovenous malformations: arteries or veins rupture due to abnormal communication Low platelet count : reduced ability to form blood clots Summary: Blood in poop may simply be related to a red appearance from foods, or due to a more serious gut injury
(16(7)):e65669 doi:10.7759/cureus.65669
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3.3.1 Muscle strength Dynamometry Grip strength moderately correlates with strength in other body compartments, so it is used instead of more complicated measures of arm and leg strength