All Videos for Cognition

Best Way to Cook Vegetables

Boiling, steaming, microwaving, air frying, and sous vide cooking are put to the test for nutrient retention.



Do Lutein Supplements Help with Brain Function?

Avocados, greens, and lutein and zeaxanthin supplements are put to the test for improving cognitive function.



Brain-Healthy Foods to Fight Aging

What is the best source of lutein, the primary carotenoid antioxidant in the brain?



Best Brain Foods: Greens and Beets Put to the Test

Cocoa and nitrite-rich vegetables, such as green leafies and beets, are put to the test for cognitive function.



Best Brain Foods: Berries and Nuts Put to the Test

Randomized controlled studies put nuts, berries, and grape juice to the test for cognitive function.



Are Acid-Blocking Drugs Safe?

Do the benefits outweigh the risks for acid-blocker drugs (proton pump inhibitors like Nexium/Prilosec/Prevacid)? What about baking soda?



Benefits of Blueberries for Mood and Mobility

Randomized, double-blind, placebo-controlled trials of… blueberries!



Benefits of Blueberries for the Brain

Blueberries can significantly improve cognitive performance within hours of consumption.



Alternative Treatments for Autism

The secretin story holds an important lesson that extends far beyond autism.



How to Reduce Cholesterol Oxidation

Chicken, fish, and egg powder in processed foods present greater risk from cholesterol oxidation byproducts, but there are things you can do to reduce exposure.



Oxidized Cholesterol as a Cause of Alzheimer’s Disease

Oxidized cholesterol can be a hundred times more toxic than regular cholesterol, raising additional concerns about foods such as ghee, canned tuna, processed meat, and parmesan cheese.



Best Food for Hay Fever (Seasonal Allergies)

What did a randomized, placebo-controlled, double-blind study of a food that costs pennies a day for ragweed allergy sufferers find?



Do Mobile Phones Affect Brain Function?

The World Health Organization concluded that cell phone radiation may cause brain tumors, but what about effects on cognitive function?



Does Marijuana Cause Permanent Brain Damage in Adults?

If you start smoking marijuana as an adult, how much cannabis is too much?



Does Marijuana Cause Permanent Brain Damage in Teens?

Is the American Academy of Pediatrics’ opposition to cannabis legalization just reefer madness revisited?



How to Prevent Alzheimer’s with Diet

What evidence is there that our meat-sweet diets play a cause-and-effect role in dementia?



Apple Peels Put to the Test for Chronic Joint Pain

Are the health benefits associated with apple consumption simply due to other healthy behaviors among apple-eaters?



How Much Lead Is in Organic Chicken Soup (Bone Broth)?

Let’s review lead from occupational exposures, shooting ranges, eggs, and bone broth.



Soy Phytoestrogens for Menopause Hot Flashes

Does soy food consumption explain why Japanese women appear to be so protected from hot flash symptoms?



Researching the Health Effects of Marijuana

Politics, prejudice, and pressure coming from both sides add to the complexity of cannabis research.



Lead Contamination in Fish and Game

Most hunters may not be aware about the health risks related to consuming meat from animals shot with lead ammunition.



Saffron vs. Memantine (Namenda) for Alzheimer’s

The spice saffron is pitted head-to-head against the leading drug for severe Alzheimer’s disease.



Best Aromatherapy Herb for Alzheimer’s

Lemon balm may beat out drugs for controlling the symptoms of severe dementia.



Best Foods for Lead Poisoning: Chlorella, Cilantro, Tomatoes, Moringa?

All plants produce “phytochelatins” to bind up heavy metals to protect themselves from the harmful effects, so what if we ate the plants?



How to Lower Lead Levels with Diet: Thiamine, Fiber, Iron, Fat, Fasting?

Iron, zinc, oil, and even doughnuts are put to the test to see if they can block lead absorption.



The Effects of Low-Level Lead Exposure in Adults

Much of the lead found in adults today was deposited into our skeletons decades ago and is just now leaching out from our bones into our blood. What are the health consequences of having lead levels down around the American average?



“Normal” Blood Lead Levels Can Be Toxic

What are the health consequences of even “low” levels of lead exposure?



Best Supplements for Prostate Cancer

What would happen if you secretly gave cancer patients four of the healthiest foods?



Higher Blood Pressure May Lead to Brain Shrinkage

Having hypertension in midlife (ages 40 through 60) is associated with elevated risk of cognitive impairment and Alzheimer’s dementia later in life—even more so than having the so-called Alzheimer’s gene.



Benefits of Rosemary for Brain Function

A half teaspoon of dried rosemary can improve cognitive function.



Is Fish “Brain Food” for Older Adults?

Why has fish consumption been associated with cognitive impairment and loss of executive function?



Should Vegan Women Supplement with DHA during Pregnancy?

I recommend all pregnant and breastfeeding women follow the consensus guidelines to get about 200mg of preformed DHA from a pollutant-free source.



Should Pregnant and Breastfeeding Women Take DHA?

Does maternal supplementation with the long-chain omega-3 fatty acid DHA improve psychomotor, mental, visual, or physical development of infants?



Alzheimer’s Disease, Copper, and Saturated Fat

If copper is associated with Alzheimer’s disease, what about healthy, whole plant food sources such as nuts, seeds, beans, and whole grains?



When Drugs and Diets Don’t Lower Diabetes Deaths

Why do some drug-based strategies shorten the lives of diabetics and some diet-based strategies fail to decrease diabetes deaths?



Cholesterol and Alzheimer’s Disease

High-tech advances, such as PET scanning, offer new insight into the role cholesterol plays in both the amyloid cascade and vascular models of the development of Alzheimer’s dementia.



Oxygenating Blood with Nitrate-Rich Vegetables

Vegetables such as beets and arugula can improve athletic performance by improving oxygen delivery and utilization. But, what about for those who really need it—such as those with emphysema, high blood pressure, and peripheral artery disease?



Alzheimer’s May Start Decades Before Diagnosis

Neurodegenerative brain changes begin by middle age, underscoring the need for lifelong preventive brain maintenance.



Can Dehydration Affect Our Mood?

The brain shrinkage associated with dehydration may not only play a role in cognitive impairment, but also in levels of energy, alertness, and happiness.



Preventing Brain Loss with B Vitamins?

One week on a plant-based diet can significantly drop blood levels of homocysteine, a toxin associated with cognitive decline and Alzheimer’s disease. Without vitamin B12 supplementation, though, a long-term plant-based diet could make things worse.