But there’s one well-intentioned habit in particular that longevity experts say can actually take years off your life instead of adding more to it: eating too much animal-based protein. In general, there are two types of proteins: animal-based proteins and plant-based proteins. Research has shown that plant-based proteins are healthier than animal-based proteins. “Excessive consumption of animal-based proteins can actually accelerate aging and undermine cellular health, contrary to popular belief,” she said. This not only compromises heart health but also affects overall cellular function and longevity,” Bhanote said.