Alright, folks, let’s talk about something that might make you rethink your morning routine—or at least your next coffee run. A neuroscientist is sounding the alarm on three everyday drinks that could be quietly increasing your risk of Alzheimer’s disease. And get this—one of the biggest offenders? That beloved Starbucks Frappuccino. Yep, the frothy, sugary, caffeine-loaded delight that so many people treat as an afternoon pick-me-up might be doing more harm than good when it comes to brain health.
Dr. Robert Love, a dementia researcher, took to Instagram (where he has a whopping 1.4 million followers) to break down the dangers lurking in some of the most common drinks on the market. First up on his list: those high-calorie, sugar-packed, ultra-caffeinated coffee beverages.
A large Frappuccino, he says, can contain as much as “300 to 400 milligrams of caffeine”—far beyond the recommended “100 to 200 milligrams” that’s considered safe for daily consumption.
What’s the problem with that much caffeine? According to Dr. Love, it’s overstimulating for the brain, raises stress levels, and wreaks havoc on blood vessels. And then there’s the sugar—often “dozens of grams per serving”, leading to inflammation, energy crashes, and long-term damage to brain function.
Instead of loading up on these sugar bombs, Dr. Love suggests switching to “black coffee or matcha”, which have far less sugar and a more moderate caffeine content. He also recommends sticking to “organic coffee beans” to avoid pesticides that might further contribute to cognitive decline.
Now, if you thought coffee was the only culprit, think again. “Soda” is another drink he warns against, calling it a “ton of sugar with no fiber,” which leads to rapid blood sugar spikes and chronic inflammation—both of which are linked to “Alzheimer’s disease”. If you’ve ever experienced that mid-afternoon energy crash after downing a can of soda, that’s your body responding to that sugar overload. And long term? Not great news for the brain.
But perhaps the most surprising addition to this list is “alcohol”—and in particular, “beer”. Dr. Love describes alcohol as “neurotoxic”, meaning it actively kills neurons in the brain. That’s right—every round of drinks could be doing more damage than you realize. Beer, in particular, is problematic because it increases “uric acid levels”, which leads to more belly fat. And research has shown that obesity between the ages of 35 and 65 can increase the risk of dementia by “30%”.
Now, before you panic, not all alcohol is equally bad. Dr. Love points out that “tequila—especially high-quality tequila—might be one of the cleaner options”, especially if you mix it with fresh lime juice instead of sugary sodas or syrups. But the key takeaway here? “Moderation is everything”.
Scientific studies back up these concerns. A 2024 study from Murdoch University in Australia found that excessive caffeine consumption—especially over “600mg per day”—can negatively affect memory, reasoning, and decision-making. Another study from 2021 involving “17,000 participants” found that drinking more than “six cups of coffee per day” increased dementia risk by “53%”. And let’s not forget the research that links high coffee consumption to “reduced total brain volume”—a key factor in neurodegenerative diseases.
So, what’s the bottom line? If you’re worried about protecting your brain health in the long run, it might be time to “rethink your drink choices”. Swapping out Frappuccinos for black coffee, ditching soda for water, and cutting back on alcohol—especially beer—could go a long way in reducing your risk of cognitive decline. Alzheimer’s disease is on the rise, with experts predicting that dementia cases in the UK alone will “nearly double” by 2040. Making simple, smarter choices today could mean a sharper mind in the years to come.
