The Brain Explained



The average adult human brain weighs around approximately 1.4kg and is about the size of a medium cauliflower. It contains around 100 billion nerve cells, called neurons, which are connected by 100 trillion connections, known as synapses.

Neurons and Synpases role in the brain 

Neurons are the building blocks of the brain network and the links between neurons are called Synapses. Synapses are essentially the connections between neurons where one cell speaks to another. Electrical signals, together with chemical reactions that are passed between the synapses allow the brain to carry out its many important functions, like for example memory.

Diagram showing where the billions of neurons live and the trillions of synapses occur.

Did you know the brain can be divided into 4 areas known as ‘lobes’?

Although they have strong connections with each other, the brains lobes can largely be defined by the cognitive processes it carries out. The 4 lobes include:
  1. Frontal lobe responsible for problem solving planning, behavioural control, emotion and word production.
  2. Parietal lobe responsible for sensorial perception
  3. Temporal lobe responsible for memory and emotion
  4. Occipital lobe responsible for vision
Diagram of a brain showing the functions of each lobe.

Changes in the brain during Alzheimer’s disease

In a healthy brain, billons of neurons exist to transmit information and send messages to different lobes and parts of the brain. During Alzheimers, the communication between neurons becomes disrupted which can lead to loss of function and cell death.1 Tissue loss occurs in the brain and over time the brain begins to shrink, affecting almost all of the brains functions and leading to a reduction in brain volume.2

Nutrition and the brain

The right nutrition is critical to help support the growth of brain connections. Souvenaid® has been specially formulated with a blend of ingredients to support the growth of brain connections and support memory function in early Alzheimer’s disease including mild cognitive impairment when taken daily for at least 6 months.

Souvenaid is a food for special medical purposes. Use under medical supervision.


  1. National Institute on Aging, ‘What Happens to the Brain in Alzheimer’s Disease’, viewed 19/1/2022.
  2. Alzheimers Association, ‘Inside the Brain’, viewed 19/1/2021.
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