The Four Essential Molecules of Life

You are literally made of just four things. First, carbohydrates like

glucose are your body’s go-to for quick energy. Next, lipids—or fats—are

for long-term energy storage. Think of them as your body's personal battery pack.

Then you have proteins, the ultimate builders. They construct your muscles and run all the chemical

reactions that keep you going. Finally, there are nucleic acids—your DNA and

RNA. This is the master blueprint, holding all the genetic code that

makes you unique. From the energy you burn to the code in your cells, it all boils down

to these four essential molecules.