High levels of an amino acid common in concentration supplements may shorten men’s life expectancy, a new study finds, possibly helping explain the life expectancy gap between men and women.

Fact checked by Nick Blackmer Key Takeaways L-tyrosine is not a proven treatment for ADHD.The biggest risk to taking ...

Tyrosine is one of the 20 amino acids that people need to make proteins. It is a non-essential amino acid — which means your body can make it, so it doesn't have to be included in the diet. In fact, ...

Tyrosine is a supplement that may help improve alertness, attention, and focus. Depending on the dose, it may help boost physical and mental performance. But, not all research is conclusive, and there ...

Stimulant medicines are the most common way doctors treat attention deficit hyperactivity disorder (ADHD). But you might be looking for ways to help with your ADHD symptoms without the possible side ...

Learn more about the benefits and risks of L-tyrosine supplements, the “over-the-counter Adderall.” L-tyrosine, also simply known as tyrosine, is an amino acid and a building block our bodies use to ...

Figure 6. Overall and sex-specific associations of phenylalanine and tyrosine with lifespan using different analytic methods (weighted median, weighted mode and MR-PRESSO). We presented ...

L-tyrosine, categorized as a non-essential amino acid, is critical in creating neurotransmitters like dopamine, adrenaline, and noradrenaline. These are crucial to controlling mood, managing energy ...

The protein tyrosine phosphatase (PTP) superfamily of enzymes functions in a coordinated manner with the protein tyrosine kinases to control signalling pathways that underlie a number of fundamental ...

We used STI571 (Glivec, Novartis, Basel, Switzerland), 7 an inhibitor of the tyrosine kinase activity of c-kit, in a patient with a gastrointestinal stromal tumor. In October 1996, a 50-year-old, ...

Daphne Berryhill is an oncology pharmacist and freelance writer. She loves the collaborative process of creating health content. Her goal as a writer is to offer information that’s meaningful, ...