New research reveals that just one high-fat milkshake can impair blood flow to the brain within hours, raising concerns about the hidden risks of saturated fat.
The Study: How Scientists Tested a “Milkshake Shock”
Researchers at the University of South Wales gave participants a single milkshake containing 130 grams of fat—about four times the recommended daily intake. Within hours, imaging tests revealed significant reductions in blood vessel flexibility and blood flow to the brain. The researchers dubbed this acute effect a “milkshake shock” or “brain bomb.”
Impact on Circulation and Brain Function
Blood vessels became less responsive, making it harder for the body to regulate circulation. This directly affects oxygen delivery to the brain. Participants also showed impaired cognitive performance in reaction-based tasks just hours after consumption. Scientists warn that frequent exposure to such fatty meals may contribute to long-term risks like stroke and dementia.
“The effect was almost immediate. Even one milkshake can temporarily harm the brain’s vascular system,” said lead researcher Dr. Andrew Thomas.
Why Older Adults Are Hit Harder
The research showed that participants over 50 experienced up to 10% greater decline in blood flow compared to younger adults. This suggests aging blood vessels are more vulnerable to the stress caused by saturated fat, making “cheat-day” indulgences especially risky for seniors.
Takeaway: Smarter Choices for Brain Health
While one milkshake may not cause permanent damage, the repeated strain on circulation can accelerate age-related cognitive decline. Experts recommend:
- Limiting high-saturated-fat meals to occasional treats.
- Choosing unsaturated fats (olive oil, nuts, avocado) for daily use.
- Balancing indulgences with antioxidant-rich foods like berries and leafy greens.
In short, your brain feels what you feed it—so think twice before reaching for that extra-creamy shake.
