
Brain Expert: These Common Habits SHRINK Your Brain – Alzheimer’s, Fatigue & Lost Joy | Daniel Amen
Rangan Chatterjee
May 14, 2025
Mindsip insights from this episode:
Avoid sugar bursts to maintain testosterone levels
Consuming a burst of sugar can cause an immediate 25% drop in testosterone levels.
Play racket sports to enhance longevity and brain function
Studies show people who play racket sports live longer than others, likely because the coordination activates the cerebellum, which in turn boosts frontal lobe function and decision-making.
Recognize erectile dysfunction as a sign of brain dysfunction
Because blood flow problems are systemic, erectile dysfunction is a direct indicator of brain dysfunction, as poor circulation affects the entire body.
Reduce Alzheimer's risk by shifting from high-carb to fat-based diet
A Mayo Clinic study found that people on a standard high-carb diet had a 400% increased risk of getting Alzheimer's disease compared to those on a fat-based diet.
Nurture hippocampal stem cells with a healthy diet
Your hippocampus creates 700 new stem cells daily, and you can either nourish these 'baby seahorses' with good food or cause them to shrivel with a poor diet.
Shift focus from negativity to enhance frontal lobe function
People with a conscious negativity bias, who consistently focus on what's wrong, show significantly less function in their frontal lobes on brain scans.
Improve brain health to enhance mental illness outcomes
Most psychiatric illnesses are not abstract mental health problems but are brain health problems that improve when you make the physical organ of the brain healthier.
Avoid alcohol to protect your gut microbiome
Drinking alcohol is like consuming a disinfectant that harms your gut microbiome, the 100 trillion bugs responsible for making neurotransmitters and supporting your immune system.
Avoid marijuana to protect brain health from premature aging
In a massive study of 64,000 brain scans, marijuana use was found to be even worse than alcohol in terms of prematurely aging the brain.
Scan cosmetics for hormone-disrupting toxins with Think Dirty app
You can use an app called 'Think Dirty' to scan your personal care products for hormone-disrupting toxins like parabens and phthalates that are harmful to your brain.
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