Scientists just found a wild metabolic 'kill switch'—by blocking one amino acid (cysteine), mice dropped 30% of their body weight in just 7 days! Turns out, without cysteine, their cells couldn’t turn food into energy, so their bodies torched fat like crazy. Don’t try this at home, though: cysteine is in almost everything we eat, and cutting it out could be super risky. Still, this could totally change how we think about metabolism and weight loss! #ScienceNews #WeightLoss #Metabolism #Health