Toxic metals like lead, cadmium, and manganese are widespread in our environment and are associated with impaired cognitive function and cognitive decline.As the prevalence of Alzheimer’s disease and dementia continues to rise, a growing body of research is sounding the alarm on a possible culprit: heavy metal exposure.
Environmental Factors Fueling Cognitive Decline
Nearly 7 million Americans live with Alzheimer’s disease, and this number is projected to almost double by 2050, according to the Alzheimer’s Association.
Cadmium, in particular, has been increasingly released into the environment through industrial activities such as coal mining and the use of phosphate fertilizers on crops.
Trace Metals That Mitigate Dementia Risk
While some metals can adversely affect neurological health, many essential trace metals could potentially reduce the risk of Alzheimer’s disease and other forms of dementia. These trace metals, or minerals, play a crucial role in maintaining brain health and mitigating the risk of neurodegenerative diseases when not consumed in excess.
- Magnesium: Neuroprotective; reduces oxidative stress and inflammation
- Zinc: Essential for immune functions and brain communication
- Copper: Reduces oxidative stress and inflammation
- Selenium: Improves cognition in mild cognitive impairment
Food sources rich in these trace metals include:
- Various nuts like almonds, walnuts, and pecans, and seeds (chia, flax, sunflower)
- Legumes (lentils, chickpeas, black beans)
- Whole grains, including whole oats, quinoa, and barley
While these trace metals may have a neuroprotective effect, they are not a substitute for established treatments for Alzheimer’s disease and dementia. A comprehensive treatment plan that includes lifestyle changes, medications, and cognitive training is still necessary to manage these conditions effectively.
Exposure to Heavy Metals in Daily Life
Prolonged exposure to low levels of aluminum can lead to changes associated with brain aging and neurodegeneration, a scientific review published in Toxicology showed. The use of antacids made with aluminum hydroxide is one of the main sources of aluminum exposure in humans.
There is no known way to reverse the damage caused by aluminum exposure, Dr. Charles M. Janssens, an internal medicine specialist in Cincinnati, told The Epoch Times. “The brain is demonstrated to have some plasticity and regenerative ability,” he said. “But the best course of action is to remove the source causing the insult.”
The way we’re exposed to these metals varies. “With lead and arsenic, it is primarily through dietary sources, and for other metals, it is more due to occupational exposure,” Dr. Janssens said.
While aluminum has been associated with impaired cognition, this doesn’t necessarily mean you need to throw out your aluminum cookware. These metals need to be in a certain state, such as gas or liquid, to be absorbed into our bodies and cause harm, Dr. Janssens said.