Macronutrients, such as carbohydrates, fats, and proteins, serve primarily as energy providers for your body. 

Micronutrients, such as vitamins, minerals, amino acids are particularly important for your health.

If a single module of our metabolism is not sufficiently available,
this complex system no longer works well.
Our food is transported into the cells - which is why a well-functioning metabolism is important - and there, with the help of enzymes, vitamins and trace elements, in short: micronutrients are burned with the oxygen inhaled through a very complex system. 
This is how we get the energy we need for all the processes in our body. 
 

With an individual assessment I can tell you if tests would be necessary

and which ones.
It helps me to supply you with the  information which micronutrients are missing.
 

The objective is to support your vital energy ideally even to increase it.