You may want to think twice before guzzling down your favorite protein shakes. A new study shows that the pre and post workout drink can lead to depression.
Researchers over at the University of Sydney discovered that the consequences of long-term consumption of protein shakes are caused by certain amino acids that can be found in the beverages. So while you are building muscle, the branched-chain amino acids are reducing your lifespan, causing mood changes and contributing to weight gain.
“While delivering muscle-building benefits, excessive consumption of branched-chain amino acids (BCAAs) may reduce lifespan, negatively impact mood and lead to weight gain,” Dr. Samantha Solon-Biet concluded. While doing their study, the researchers found that the BCAAs compete with the tryptophan that travels to the brain.
If you don’t know much about tryptophan it is a precursor to the hormon serotonin, also known as the “happiness chemical.” Due to BCAAs and tryptophan basically competing for a spot in your brain it causes serious issues for those who indulge in protein shakes.
“This then lowered serotonin levels in the brain, which in turn was a potent signal to increase appetite. The serotonin decrease caused by excess BCAA intake led to massive overeating in our mice, which became hugely obese and lived shorter lives.”
See what other effects protein shakes will have on your body and brain in the video above.