L-theanine is an amino acid found mainly in green and black tea. Research suggests that around 200 to 400 milligrams (mg) per day may help manage anxiety and stress, though more research is necessary.

Pain on the left side of your middle back can stem from muscle strains, inadequate posture, osteoarthritis (OA), pinched nerves, herniated discs, or spinal stenosis. These musculoskeletal issues often ...

Berberine, or berberine hydrochloride, is a plant compound used in Chinese and Ayurvedic medicine that may support metabolic health, but research is still evolving. Studies suggest berberine may help ...

Google tightened the "Good" LCP threshold from 2.5 to 2.0 seconds in March 2026, and promoted INP from supplementary to a ...