Lead in tapwater, tampons, applesauce. Aluminum and gadolinium injected into the bloodstream. Copper and mercury in fungicides. Titanium in cosmetics...Heavy metal assault. What are the consequences?

There's an overabundance of evidence of harm from heavy metals: cellular damage, bone diseases, Alzheimer's, autism, liver and kidney damage, cancer, heart disease, heart failure, stroke, death.

May 24, 2025

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Heavy Metals Linked to Neurological Damage

Heavy metals are a category of metallic elements characterized by their relatively high atomic weights and densities, typically 5 times greater than water. Over time, they accumulate in the food chain and the human body (including bone and soft tissue), causing serious health problems. Conditions linked to heavy metals include neurological conditions such as Alzheimer’s and Parkinson’s, cardiovascular disease, kidney damage, reproductive issues, and cancer.

Dr. Isaac Eliaz MD

“Contamination with Metals is a Serious Problem Worldwide”

Contamination with metals is a serious problem worldwide due to their toxicity and nonbiodegradability and their ability to accumulate in the environment and in living organisms. Pollution of farmland soil and water is of great concern, since metal uptake by plants is a key route for the entry of metals into the food chain.

Journal of Toxicology

Heavy Metals Interfere with the Body’s Functioning

When present in the human body, heavy metals serve no beneficial role. In fact, they almost always interfere with normal biological processes instead. They do this partly by binding to proteins in the body that would otherwise be activated by normally occurring minerals like magnesium and zinc. This causes massive cellular interference, oxidative stress, and chronic inflammation.

Dr. David Jockers

More than a Million Deaths Each Year Caused by Lead

The World Health Organization estimates that more than 1 million deaths each year are attributable to lead poisoning… Lead continues leaching from old paint, pipes and industrial sources into soils, homes and waterways across the globe.

The Conversation

Dealing with Poisons
About Heavy Metals
Why They’re in Our Bodies
A Few of the Worst
Prevalence, Sources of Metals
Evidence of Harm: 32 References on Damaging Effects
Removing Heavy Metals
For Wellness Providers & Educators: Boost Your Impact — Premium Resources Just a Click Away from $19

Dealing with Poisons

A Severe Betrayal: Man-Made Poisons — The desire of industry decision-makers to produce toxic (poisonous) chemicals—that they can profit from—has proven insatiable. The EPA has documented more than 80,000 poisons.
Oxidative Stress & Detoxification — Oxidative stress refers to a serious imbalance at the cellular level that is at the root of health issues. Detoxification is one of many natural processes of the human body and is conducted through various organs. The ability to effectively expel waste and toxins through multiple elimination pathways is crucial for optimizing health.
Pesticides, Glyphosate — Includes atrazine, CFS, DDT, fungicides. Harms: increased cancers, tumors, stillbirth, autism, brain damage, respiratory issues, liver disease, IBD, microbiome disruption, biodiversity loss, and damage to honeybees.
EDCs & Microplastics — Includes BPA, dioxins, parabens, PCBs, PE, PFAS, phenols, phthalates. Harms include ADHD, autism, cancer, cardiovascular diseases, children’s IQ decline, demasculinizing, diabetes, fertility issues, pregnancy complications, thyroid dysfunction, weight gain.
Fluoride — Fluoride is a neurotoxin, meaning it is a poisonous substance that disrupts the functioning of the nervous system. Harms include lower IQ in children, cancer, and osteoporosis.
Heavy Metals (you’re here) — Includes aluminum, antimony, arsenic, cadmium, chromium, copper, lead, mercury, nickel. Harms include cellular damage, bone diseases, Alzheimer’s, autism, liver and kidney damage, cancer, heart disease, heart failure, stroke, death.
Synthetic Food Additives — Includes emulsifiers, carrageenan, food dyes, artificial sweeteners, preservatives. Harms include tumors, asthma, neurological damage, ADHD, anxiety, and depression.
Air Pollution, VOCs & Other Toxins — Includes formaldehyde, GenX chemicals, PAHs, particle pollution, radon, TCDF, vinyl chloride, VOCs, TCE.

About Heavy Metals

Heavy metals have a toxic effect on the body. “Heavy” refers to their density compared to water. [source and source and source]

Generally speaking, heavy metals refer to those that serve no role in the body and are toxic even in small amounts. [source and source and source]
However, there are also trace minerals that naturally occur in food sources and are needed by the body in very tiny amounts. (Trace minerals include copper, iron and zinc, and they’re discussed here.)
When trace minerals are in the body in unnaturally large amounts, they, too, can cause harm. As a result, some trace minerals may be found in research on the harms of heavy metals. This is the case with chromium and copper, for example.

Heavy metals include the following.

Aluminum
Antimony
Arsenic
Cadmium
Chromium (trace mineral)
Copper (trace mineral)
Gadolinium
Lead
Mercury
Nickel
Titanium

For a complete list of heavy metals, see here.

Why They’re in Our Bodies

Heavy metals enter the body from:

Drinking tap water [source and source and source]
Eating “conventionally-grown” or processed foods [source and source and source and source and source and source and source and source and source]
Absorbing toxic substances through the skin [source and source and source]
Injecting vaccines into the bloodstream [source and source and source and source and source and source and source]
Breathing air polluted with toxins [source]

When heavy metals accumulate in the body, they’re stored in the tissues, including organs and bone marrow. The metals may also be released into the bloodstream.

A Few of the Worst

Metals that are widely used and cause damaging effects in the body include:

Aluminum / Aluminium (alternate spellings) — “Aluminum is widely used to manufacture beverage cans and antacids, as a base for paints and cosmetics, and so forth.” [source]
Antimony — “Antimony is a critical input for the defense industry, particularly for armor-piercing ammunition, night vision goggles, infrared sensors, bullets, and precision optics, and the electronics industry, including semiconductors, cables, and batteries.” [source and source]
Arsenic — “Arsenic is not a metal but a metalloid that occurs as [various forms].” [source] Foods especially high in arsenic are conventionally-grown rice, brown rice syrup, shellfish, Hijiki seaweed, baby formula, non-organic chicken and eggs. [source]
Cadmium — “Cadmium occurs in [multiple forms]. The half-life of cadmium in the body is approximately 10 to 30 years. Some fertilizers, cell phone batteries, tobacco and tanning industry wastes, and even some metal platings used in jewelry contain this metal. Hence, cadmium might be present in all types of foods. [source]
Chromium — “Chromium is a waste product of industries including electroplating, leather tanning, and textile industry and of fossil-fuel combustion.” [source]
Copper — “Copper is used as a fungicide, algaecide, and nutritional supplement, among other applications.” [source] Copper is essential for brain health, but having too much also leads to neurodegeneration and neurological disorders.” [source]
Gadolinium — “MRI contrast agents are compounds used to make internal body structures more visible on MRI scans. Gadolinium, a rare earth metal, is… administered intravenously or injected into the spinal column.” [source]
Lead — “Major sources of environmental contamination include mining and steel, metal, and other industries. Lead is used in the manufacture of batteries, mainly car batteries, electrical systems, piping, construction materials, petrol, and sulfuric acid production, as a base for alloys and paints, as an antiknock agent for automotive gasoline, and for radiation shielding.” [source]
Mercury — “Mercury can occur [in multiple forms, some of which deposit in the brain, others depositing in other organs]… Mercury is used as a fungicide for seeds and grains, as well as in dental filling materials, preservative for vaccines, and fluorescent lamps. [One type of mercury] bioaccumulates in fish in contaminated areas through absorption and ingestion.” [source] “Mercury enters our bodies from many different sources, including mercury vapors in ambient air, ingestion via drinking water, fish, dental amalgams, occupational exposures, home exposures, over-the-counter products, and more.” [source]
Nickel — “Nickel is used in more than 3000 metal alloys, batteries, and coinage and as a catalyst for several chemical reactions, in surgical and dental prostheses, etc.” [source]
Titanium — “Titanium is a heavy metal that’s been used for industrial purposes for decades but is now finding its way into our homes via our food, sunscreen, cosmetics, textiles, personal care products, supplements, toothpaste and more… Titanium nanoparticles, often in the form of titanium dioxide, are becoming a commonly used additive in various industries despite known issues around toxicity and potential health threats.” [source]

“Systemic Toxicants, Known to Induce Multiple Organ Damage, Even at Lower Levels of Exposure”

Several studies from our laboratory have demonstrated that reactive oxygen species (ROS) production and oxidative stress play a key role in the toxicity and carcinogenicity of metals such as arsenic, cadmium, chromium, lead, and mercury. Because of their high degree of toxicity, these five elements rank among the priority metals that are of great public health significance. They are all systemic toxicants that are known to induce multiple organ damage, even at lower levels of exposure. According to the United States Environmental Protection Agency (U.S. EPA), and the International Agency for Research on Cancer (IARC), these metals are also classified as either “known” or “probable” human carcinogens based on epidemiological and experimental studies showing an association between exposure and cancer incidence in humans and animals.

Published in 2014