Health Claims

A doctor used a special sound wave treatment with tiny bubbles in one person with early Alzheimer’s, and for a few weeks, the brain’s Alzheimer’s protein markers went down a little—but then they went up even higher by three months.

Quantitative

Scientists found that mice given a special sound treatment with tiny bubbles in their brains remembered better where they were in a water maze, and this worked for both regular mice and genetically modified ones.

Correlational

Scientists used a special sound wave treatment on mice with Alzheimer’s-like brain changes, and after four weekly sessions, they saw fewer and smaller clumps of harmful protein in the memory area of the brain—but the loose, floating version of that protein didn’t change much.

Quantitative

Scientists found that using a special sound wave treatment on mice with Alzheimer’s-like brain changes reduced two key signs of the disease—tau protein buildup and tangled nerve cell branches—by nearly a third and half, respectively, after four treatments.

Correlational

Casein, a protein in milk, sticks to certain plant compounds and minerals differently depending on things like how acidic the environment is, how hot it is, or how salty the solution is — and also depends on the shape and size of the stuff it’s sticking to.

Mechanistic

Casein, a protein in milk, seems to grab onto certain metal bits like silver and zinc more than others because its building blocks have spots that naturally stick to those metals.

Mechanistic

Milk has a protein called casein that grabs onto calcium like a magnet, helping it form tiny clumps that stay suspended in milk instead of sinking or separating.

Mechanistic

When casein (a protein in milk) meets polyphenols (natural compounds in tea, wine, or fruit), they stick together in different ways—like magnets and glue—and this changes the protein’s shape and how it works.

Mechanistic

When milk proteins (casein) mix with certain plant-based fibers (polysaccharides), they can either stick together or push apart based on conditions like acidity and salt levels, changing how the final dairy product feels and looks.

Mechanistic

Eating foods rich in flavanols, like dark chocolate or berries, might help older people remember details better by boosting a specific part of the brain that separates similar memories—but it doesn’t help them remember things after a delay, which uses a different brain area.

Mechanistic

Even when older adults did a regular workout routine four times a week, it didn’t help their memory or brain blood flow in the area that handles similar-item discrimination—probably because the exercise wasn’t hard enough to get their heart and lungs in better shape.

Causal

Scientists created a new computer memory game that only works if your brain’s dentate gyrus is working well—it’s good at spotting tiny differences between similar pictures—and it doesn’t rely on other memory areas, making it perfect for testing this specific brain function.

Correlational

As people get older, a part of the brain called the dentate gyrus tends to lose blood flow and gets worse at helping us tell similar memories apart—like remembering where you parked today versus yesterday—and this is different from what happens in Alzheimer’s disease, which starts in a different brain area.

Correlational

If you're between 50 and 69 and eat a daily dose of cocoa flavanols for three months, you might get better at remembering small differences between similar things—and your brain’s memory area might get more blood flow, helping fight off some of the memory slowdown that comes with aging.

Causal

Eating a specific amount of cocoa flavanols doesn’t change blood flow in the brain unless you’re also consuming other flavanol-rich foods — even if the chocolate tastes and looks the same and has the same calories and stimulants.

Causal

Eating a lot of cocoa flavanols (almost half a gram) might boost blood flow to certain parts of the brain in older adults, but eating just a tiny bit (23 mg) doesn’t do anything — so more seems to make a difference.

Causal

Eating a specific amount of dark chocolate compounds can make more blood flow to your brain—even when you're just sitting still and not thinking hard—suggesting it might naturally help your blood vessels work better.

Mechanistic

When older adults eat a specific amount of cocoa flavanols, blood flow in certain parts of their brain goes up—but only in those areas, and not because they just think it should work or because their body is reacting to anything else.

Mechanistic

Eating a chocolate drink with a lot of cocoa flavanols can make more blood flow to certain parts of the brain in people aged 50 to 65, and this effect shows up about two hours later—compared to a drink with very little cocoa.

Causal

Scientists aren’t sure if drinking tea, coffee, or caffeine affects your risk of dementia or Alzheimer’s — the evidence is too weak to say for sure.

Descriptive

Drinking caffeine doesn’t seem to make you more or less likely to get dementia — people who drink the most caffeine had a tiny bit lower risk, but it’s not enough to be sure it’s real.

Correlational

People who drink a lot of tea may have a slightly lower chance of getting Alzheimer’s disease compared to those who drink little or no tea, according to studies tracking large groups of people over time.

Correlational

People who drink 1 to 3 cups of coffee a day might have the lowest chance of getting dementia, according to studies of hundreds of thousands of adults — but drinking more or less than that doesn’t seem to help as much.

Correlational

People who drink more tea tend to have a slightly lower chance of getting dementia — every extra cup a day might lower the risk by about 4%.

Correlational