Are You Really in Control? The Hidden Science Behind Free Will

You wake up, stretch, scroll your phone, and decide to have a smoothie. A green one. Because you’re in control, right?

But what if… you’re not?

What if your gut bacteria decided that breakfast for you? What if your cortisol levels shaped your to-do list? What if your genes, hormones, and even your serotonin levels were pulling strings while you danced beneath them like a marionette on autopilot?

Let’s unpack that puppet show theory:

Neurotransmitters: The Mood Makers Behind the Curtains

The brain is a chemical jungle. Every decision you make is soaked in a cocktail of neurotransmitters: dopamine, serotonin, norepinephrine, GABA, and more. These messengers shape your motivation, behaviour, focus, and feelings.

For example, dopamine isn’t just the “pleasure chemical.” It’s the anticipation molecule, driving you to chase goals, rewards, and... biscuits (Schultz, 2016). Low dopamine? You might not even feel like getting out of bed. High dopamine? Suddenly reorganising your entire house at 10pm sounds reasonable.

Serotonin, meanwhile, is intimately linked with mood and impulse control. And cortisol? It’s the stress hormone - elevated in chronic stress situations, which can hijack your executive function and lead to impulsive or emotionally charged decisions (Arnsten, 2009).

So when you make a choice, ask yourself—are you choosing, or is your neurochemistry at the wheel?

Gut Microbiome: The Little Creatures Making Big Decisions

Your gut is home to roughly 100 trillion microbes. And they’re not just freeloading—they’re actively communicating with your brain through a bidirectional superhighway known as the gut-brain axis (Carabotti et al., 2015).

Certain bacteria like Bifidobacteria and Lactobacillus can influence the production of GABA and serotonin, affecting your mood, anxiety, and even decision-making (Dinan & Cryan, 2017). Others may send signals to trigger cravings for specific foods - like sugar or carbs - that suit them, not necessarily you (Alcock, Maley & Aktipis, 2014).

In essence, your microbes might be planting thoughts and nudges into your mind like tiny bacterial influencers.

Genetics: Your Blueprint for Behaviour?

We inherit more than eye colour and height. Your genetic code influences traits like impulsivity, risk tolerance, and even political leanings (Hatemi et al., 2010). There are genes linked to addiction, eating behaviours, stress responses, and sleep patterns—often interacting in complex, polygenic ways.

In fact, twin studies suggest that up to 50% of personality traits may be heritable (Bouchard & McGue, 2003).

So while you feel like you’re independently choosing to start a business, become vegan, or date an emotionally unavailable Scorpio—it might just be your genome doing its thing.

Environmental Factors: The Scene Designers of Your Life

Context changes everything.

• Judges are statistically more lenient after lunch (Danziger, Levav & Avnaim-Pesso, 2011).
• Music tempo in shops can affect how long you browse (Milliman, 1982).
• The smell of fresh bread makes people more likely to help strangers (Baron, 1997).

Even temperature, lighting, and the presence of greenery can shape your decisions, mood, and productivity—without you even realising it.

So... Is Free Will Just an Illusion?

Not quite.

Yes, your body is full of hidden influences. But awareness gives you power. When you understand the role of gut health, hormone balance, and genetic predisposition, you’re no longer just reacting—you’re observing.

You’re pausing to ask:
“Is this craving mine? Or is it the result of something deeper?”
“Is my stress making me reactive? Or can I take a breath before I reply?”

That’s where at-home health testing becomes so valuable. When you understand what’s going on under the surface - your hormone levels, nutrient deficiencies, microbiome diversity, or even genetic risk—you’re not handing over control to the chemistry. You’re learning to co-author the script.

Reclaiming Control: From Chemistry to Consciousness

Here at Vitall, we believe that knowledge is power. By testing your blood, hormones, gut health, or genetics, you’re not trying to control every variable—you’re simply shining a light on the stage.

Because in the grand show of life, it’s better to know who’s holding the strings.