Tag Archives: medicine

  Nature has equipped certain animals with extraordinary defenses against disease and infection. While humans rely on medicine and vaccines, some creatures possess immune systems so powerful they seem almost invincible. From surviving deadly toxins to resisting cancer, these remarkable species showcase evolution’s most impressive biological shields. This article presents general information about animal immune systems based on scientific observations. ...

It is normal for hair color to change, as people age. But white hair can appear at almost any time in life. Even teenagers and people in their 20s may notice strands of white hair.