The Claim
Consumption of decaffeinated coffee is associated with higher odds of dementia compared to consumption of 1–2 cups per day of caffeinated coffee.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
People who drink decaffeinated coffee have a higher rate of dementia than people who drink 1–2 cups of caffeinated coffee per day.
See the scientific wording
Consumption of decaffeinated coffee is associated with higher odds of dementia compared to light (1–2 cups/day) caffeinated coffee consumption, suggesting that caffeine may not be the sole factor influencing the relationship between coffee and dementia risk.
Decaffeinated coffee has fewer protective plant compounds that normally help brain cells resist damage and clear toxic proteins, leading to more brain cell stress and buildup of harmful substances over time.
What the research says
1 studyStudy: High coffee consumption, brain volume and risk of dementia and stroke
People who drink decaf coffee were more likely to get dementia than those who drank 1–2 cups of regular coffee, suggesting that something other than caffeine in coffee might affect brain health.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.