Abby Grimm, RD is a registered dietitian with FWDFuel. While a lot goes into how we feel, there is one powerful amino acid called L-tyrosine that could help increase happiness, improve memory, and ...

Supplemental tyrosine may have benefits for those with a hereditary condition called phenylketonuria (PKU). It may also help improve cognitive function, especially under stress. Tyrosine is found in ...