Your daily coffee, your Saturday cocktail, or your afternoon soda may be doing more than satisfying your thirst—they may be silently damaging your brain. One of the world's leading neuroscientists with expertise in Alzheimer's prevention, Dr. Robert Love, advises that the beverage you choose can have a powerful effect on your memory, mental acuity, and brain health over the long term.In a recent Instagram video, which has reached millions, Love named three popular beverages that can speed up brain decline and put you at risk of dementia. But it's not all doom and gloom—he also shared easy, healthier substitutes that can feed your brain and shield your memory for decades to come.If you want to keep your mind sharp, it's time to think twice about what's in your cup.Why What You Drink Matters for Memory?Brain health is not only about what you consume—what you drink matters just as much. Some drinks can heighten inflammation, upset gut health, and lead to neurodegeneration in the long run. Research has revealed that chronic inflammation and insulin resistance are major causes of cognitive impairment, and hence dietary habits become crucial in the prevention of memory-related diseases such as Alzheimer's.Dr. Love identifies three beverages that ruin memory and speed brain ageing—and provides simple switches with long-term mental advantages.Drink #1: AlcoholAlcohol is arguably controversial in terms of its health impact, but science is becoming more definite: it's unhealthy for your brain."Alcohol is neurotoxic—it damages and kills neurons," says Love. "It also disrupts gut bacteria, and what’s good for your gut is good for your brain. By harming your gut bacteria, you’re also harming your brain."Beyond its immediate effects on cognitive function, alcohol contributes to chronic inflammation, liver stress, and poor sleep—all of which are linked to impaired memory and increased dementia risk.According to Love, beer is particularly harmful to brain health due to its gluten content and its ability to raise uric acid levels."Gluten is inflammatory, and beer also increases uric acid, which promotes belly fat storage," he explains. "Ever heard of a beer belly? That’s uric acid at work."If you do still intend to drink alcohol on occasion, Love suggests opting for good-quality tequila with a squeeze of fresh lime. "It's one of the cleaner options and will probably do less damage than beer," he points out. The best option for your brain, though, is to reduce or eliminate alcohol consumption altogether.Drink #2: SodaSoda is a notorious weight-gain and metabolic-disorder culprit, but its effects on brain health are no less alarming."Soda is filled with sugar and has no fibre, so it spikes your blood sugar and insulin levels very quickly," says Love. "This causes inflammation, and inflammation is one of the largest risk factors for Alzheimer's disease."Consuming high amounts of sugar has also been associated with cognitive decline, memory loss, and elevated risks of neurodegenerative disorders. Research also indicates that regular consumption of soda can decrease the size of the hippocampus—the memory center of the brain—over time.Rather than grabbing for a can of soda, grab sparkling water with a splash of lemon for a cool, brain-smart option. If you must have caffeine, green tea gives you robust antioxidants that maintain cognitive function and fight inflammation.Drink #3: Giant FrappuccinosThat gigantic, sugar-ridden frappuccino at your favorite coffee house may be providing you with more than just a shot of energy—it could be silently destroying your brain."These beverages have too much caffeine—usually 300 to 400 milligrams—and are full of sugar," cautions Love. "That's not only terrible for your heart and blood vessels; it's terrible for your brain, as well."Too much caffeine overstimulates the nervous system, causing heightened anxiety, sleep disruptions, and even cognitive impairment with prolonged use. High sugar content, on the other hand, leads to inflammation, insulin resistance, and compromised brain function.If you're an every-day-coffee fan, opt for matcha or black coffee. They're both rich in brain-fueling antioxidants, but it is important to ensure that they're organic."Regular coffee is often filled with pesticides, and those are detrimental to brain function," Love adds. Organic matcha and black coffee offer a cognitive boost with no toxic load.What are Some Brain-Boosting Habits?While replacing dangerous beverages with more healthful ones is a fine start, the overall lifestyle decisions count as well. Here are some other steps to help keep your memory and brain sharp:Drink plenty of water. Cognition can be affected by dehydration, so be sure to get plenty of fluids during the course of the day.Consume a brain-healthy diet. Emphasize whole foods with antioxidants, healthy fats, and fibre to support both your brain and gut.Prioritize sleep. Lack of sleep is connected to memory loss and brain degradation. Strive for seven to nine hours of good-quality rest per night.Exercise your body. Exercise can help brain function by increasing blood flow and eliminating inflammation.Brain health has nothing to do with genetics and everything to do with the everyday choices you make. No beverage is going to completely ruin your cognitive abilities tomorrow, but continually drinking toxic substances will catch up with you.