05/23/2025
This Common Parasite Can Hijack Your Brain—And Over 2 Billion People Carry It
You’ve likely heard of parasites in the gut. But what if I told you one of the most prevalent parasites on the planet can silently invade your brain—and influence your thoughts, emotions, and behavior? Meet Toxoplasma gondii, a protozoan parasite estimated to infect more than 2 billion people worldwide, often without any obvious symptoms. Emerging neuroscience tells us it may be far from harmless. Recent studies reveal T. gondii may: Manipulate Dopamine. This parasite increases dopamine synthesis in the brain. Dopamine governs mood, motivation, reward-seeking behavior, and risk-taking tendencies—altering how you think and feel.
[Stibbs, 1985; Prandovszky et al., 2011], Rewire the Amygdala: It alters the function of the amygdala, the part of your brain responsible for processing fear, danger, and emotional memory—potentially dulling your instinctual fear response. [House et al., 2011], Affect Mental Health: Multiple studies link T. gondii infection with: Schizophrenia: Higher antibody levels found in patients (Torrey & Yolken, 2003), Obsessive-Compulsive Disorder (OCD), Anxiety and Depression, Increased Su***de Risk. (Sutterland et al., 2015), Drive Risk-Taking Behavior: Infected individuals show a measurable increase in impulsivity and risk behavior.
(Flegr et al., 2016).
Why This Matters: This isn’t pseudoscience, it’s neuroparasitology, a growing field revealing how microbes may shape not just our gut, but also our minds. If you’ve ever struggled with inexplicable mood swings, brain fog, or poor impulse control, it may be worth asking: Is it me—or is it something living inside me?
What You Can Do: I personally incorporate regular parasite-cleansing protocols and support my brain-gut axis with: Antimicrobial herbs (e.g., black walnut, wormwood, clove, pau d’arco)
• Dopamine-supporting nutrients (e.g., magnesium, B6, iron, tyrosine)
• Liver and lymphatic support (e.g., milk thistle, red root, castor oil packs)
Because T. gondii isn’t just a gut parasite—it’s a potential neurological disruptor.