That's a good question. I can imagine that there was a time before there was life on Earth, and then clearly there was a time X-hundred thousand years or a million years later when there were things that we would all recognize as biological.
A high count indicates the presence of inflammation in the body. Because white blood cells are calculated by the number of cells per volume of blood, test results can vary between labs. Different labs use different degrees of measurements for the white blood cell count.
The common low white blood count causes include an unhealthy lifestyle and diet, emotional stress, and nutritional intake. Low immunity can lead to several health conditions. That is why it is important to know how to increase white blood cell count to ensure that your body can respond well to illnesses and infections.