Modern Diseases: Deviations from Nature

modern diseases example: cavities

Modern Diseases: The Price of Modernization

By the time you read this post, it should be clear that humans evolved to be hunter gatherers. Our genes spent millions of years structuring our bodies into efficient mobility machines. Unfortunately for them (and us), the last ten thousand years have changed our environments amazingly fast. Now, our genes are having a hard time catching up, giving rise to modern diseases.

At this point in human evolution culture has become the most rapidly evolving unit of our lives. While diseases of the past no longer plague us due to medical advances, diseases of prosperity have begun to take center stage. These modern diseases, dubbed mismatch diseases in Daniel Lieberman’s The Story of the Human Body, have become the menace of modern society.

These mismatch diseases are the result of our environments differing from what our bodies are adapted for. These diseases can be classified in three ways: too new an experience, too much of something, and too little of something. Each category has many illnesses associated with it. Let’s start with too little of something.

Human Evolution: The Biology of Man

human evolution examples

The Story of Human Evolution

Before I write about the various wonders of the biological world I will answer a biological question common to us all: what is the story of human beings in the grand scheme of nature? What is the story of human evolution? We are aware that our species excels at communication, and is very adaptable through culture but it is rather hard to find a source that narrates our strengths and weaknesses as a creature of the Earth.

For the purpose of this post, I will avoid descriptions of each ancestral species leading up to humans but will instead summarize and emphasize the important characteristics (mutations) that are worth noting.

DNA Mutation: The Ultimate Elixir of Life

DNA Mutation Examples

DNA Mutations: What Are They?

Since the advent of life on Earth, the struggle for survival is the driving force of all biology. We have established the problems associated with maintaining complexity and various ways organisms regulate their responses to the environment. These developments are a result of the process we call evolution. It is time to describe exactly how evolution occurs. We know it is the result of cumulative changes in the characteristics in an organism. This is explained by differences in protein formation. However, we also know that DNA is the ultimate unit of life. DNA is the molecule that seeks to replicate and codes for proteins. Thus, this must be the level at which evolution takes place. It does this through a unique process: DNA mutation.