Table 2.

Summary of studies on fish protein considered in this narrative review.

	Type of Study	Protein Supplementation	Sample	Duration	Results
Alexandrov Nikita et al. 2018	Cohort Study		31,278 men and 43,355 women of 18–91 years		The proteins of animal origin increase the secretion of carnitine, suggesting their ability to preserve muscle mass.
Drotningsvik A et al. 2019	Double-blind randomized controlled pilot study	One intervention arm (5.2 g of whiting hydrolysate) and one control arm (placebo)	24 nursing home residents (60 years or older)	6 weeks	The study is feasible.