Health & Fitness

Why do we tip—even when we know we’ll never see the server again? New research suggests it’s not just about rewarding good service, but about social pressure. Some people tip out of genuine appreciation, while others simply follow the norm. But here’s the twist: those who truly value great service tend to tip more than average, and everyone else adjusts upward to match them.

from Top Health News -- ScienceDaily https://ift.tt/qX0NA5g

Polyamines—natural molecules found in every living cell—have become stars in the longevity world for their ability to boost cellular cleanup and support healthy aging. But there’s a dark twist: high levels of these same molecules are consistently seen in cancer, where tumors grow aggressively.

from Top Health News -- ScienceDaily https://ift.tt/h10UwO8

Scientists have uncovered a powerful genetic switch that helps some of the body’s most important immune cells grow up properly and keep our organs healthy. The switch, called MafB, guides immature precursor cells as they develop into macrophages, the body’s clean-up and repair crew that removes pathogens, clears debris, recycles iron, and supports tissue function. When MafB is missing, these cells remain stuck in an underdeveloped state and cannot fully carry out their protective roles.

from Top Health News -- ScienceDaily https://ift.tt/I8a20g6