Is Aluminium Cookware Safe? The Honest Answer (with Sources)
The question almost every South African cookware buyer asks at some point: are aluminium pots safe? Do they cause Alzheimer’s? Should I switch to stainless steel? Here’s the honest answer, with sources, and where the limits actually are.
Short answer
Yes, normal aluminium cookware use is safe. The Alzheimer’s link is a myth. EFSA (the European Food Safety Authority) and the United Nations’ International Programme on Chemical Safety have both confirmed normal aluminium cookware use does not cause Alzheimer’s or other neurological disease. Typical cooking with aluminium pots stays well below EFSA’s Tolerable Weekly Intake of 1 mg per kg body weight.
The narrow exception: long simmering of highly acidic foods (tomato sauce, lemon-heavy dishes) in uncoated aluminium will leach more aluminium than usual into the food. For those specific cases, stainless steel or enamelled cast iron are the alternative — not because aluminium is dangerous, but because acidic cooking shortens the pot’s lifespan and discolours the food.
Where the Alzheimer’s myth came from
In 1965, a study fed rabbits very high doses of aluminium and found that the rabbits’ brains showed changes resembling Alzheimer’s plaques. This was widely reported in the popular press, and the idea “aluminium causes Alzheimer’s” entered the public consciousness.
The 1965 finding has been repeatedly disproven since. Reasons:
- The aluminium doses used in the rabbit study were thousands of times higher than anything a human gets from cookware.
- The brain changes seen in the rabbits do not match the actual pathology of Alzheimer’s disease in humans.
- Large-scale human epidemiological studies have not found a correlation between aluminium cookware use and Alzheimer’s incidence.
- The reason aluminium is found in higher concentrations in Alzheimer’s patients’ brains is because the disease process accumulates trace metals — the aluminium is a consequence of the disease, not a cause.
What the scientific bodies actually say
The United Nations’ International Programme on Chemical Safety (IPCS): “There is no evidence that aluminium is a primary cause of Alzheimer’s Disease.” (IPCS / WHO joint statement on aluminium safety.)
The European Food Safety Authority (EFSA): Sets a Tolerable Weekly Intake (TWI) of 1 mg per kg of body weight. For an average adult (70 kg), that’s 70 mg per week, or 10 mg per day. Typical cooking with aluminium pots transfers far less than this to food.
The Alzheimer’s Association (USA): “Studies have failed to confirm any role for aluminum in causing Alzheimer’s.”
BrightFocus Foundation (research foundation focused on Alzheimer’s): Confirms that the higher aluminium levels in Alzheimer’s patients’ brains are a consequence of the disease, not a cause.
How much aluminium do you actually get from cookware?
For typical cooking (non-acidic foods, normal cook times):
- Boiling water in an aluminium pot adds essentially zero detectable aluminium to the water.
- Cooking a typical stew, soup, or pap in an aluminium pot for 1–2 hours adds approximately 1–3 mg of aluminium per kg of food cooked.
- For an average serving of pap or stew, that’s less than 1 mg of aluminium per serving — well below EFSA’s 10 mg/day TWI.
For long simmering of highly acidic foods (tomato sauce simmered 4+ hours, lemon-heavy chutneys), aluminium transfer can be higher — in the range of 5–10 mg per kg of food. This is still within the EFSA TWI for an occasional dish, but it’s the situation where using a stainless steel or enamelled cast iron pot is the better choice.
When to use which pot material
| Cooking situation | Best material | Big5 / Bon Voyage option |
|---|---|---|
| Pap, samp, stew, curry, breyani — daily cooking | Aluminium (heavy-bottomed) | NW7 10pc, NC3 set, Queen 10pc |
| Catering / large events | Aluminium (heavy-duty) | NW 40–100 L |
| Tomato sauce (long simmer), lemon-heavy stews, vinegar-based dishes | Stainless steel or enamelled cast iron | Diamond 28pc SS, La Cocina enamel cast iron |
| Induction stovetop | Stainless steel or cast iron (aluminium is non-magnetic) | Diamond 28pc, S27 27pc, all cast iron |
| Outdoor potjiekos / open-fire cooking | Cast iron | BV 3-Leg Potjie, 7pc Camping Set |
Frequently Asked Questions
Is it safe to cook with aluminium pots?
Yes. The link between aluminium cookware and Alzheimer’s disease is a myth that originated from a 1965 rabbit study that has since been disproven. EFSA’s Tolerable Weekly Intake for aluminium is 1 mg per kg of body weight (about 70 mg/week for an average adult) — typical cooking stays well below this.
Do aluminium pots cause Alzheimer’s?
No. The Alzheimer’s Association, EFSA, and the UN’s International Programme on Chemical Safety have all confirmed there is no causal link. The higher aluminium levels in Alzheimer’s patients’ brains are a consequence of the disease, not a cause.
How much aluminium leaches into food during cooking?
For typical cooking (non-acidic foods, 1–2 hour cook times), approximately 1–3 mg of aluminium transfers per kg of food cooked — about 1 mg per serving, well below EFSA’s 10 mg/day Tolerable Weekly Intake. For long simmering of highly acidic foods (tomato sauce, lemon-heavy stews) the transfer is higher (5–10 mg per kg).
When should I use stainless steel or cast iron instead of aluminium?
For three situations: (1) long simmering of highly acidic foods (use stainless or enamelled cast iron); (2) cooking on an induction stovetop (aluminium is non-magnetic and won’t heat); (3) outdoor potjiekos and open-fire cooking (cast iron handles direct flame and is more robust).
Are uncoated aluminium pots different from anodized aluminium pots?
Anodized aluminium has an electrochemically-hardened surface that resists leaching. Uncoated aluminium (like traditional Bon Voyage catering pots) is the standard South African choice for daily and catering cooking — economical, easy to clean, takes the heat of high-volume cooking. For acidic foods, anodized aluminium or stainless steel are alternatives, but for everyday cooking the difference in transferred aluminium between coated and uncoated pots is small and stays well within safe limits.
What’s the difference between aluminium cookware and aluminium foil?
Aluminium foil is much thinner than aluminium cookware. Foil used to wrap acidic food (lemon-wrapped fish, tomato-based marinades) can transfer noticeably more aluminium than a thick aluminium pot, because the surface-area-to-thickness ratio is higher. For storing or wrapping acidic foods, baking paper, glass, or stainless steel containers are better choices.
Does cooking acidic food in an aluminium pot taste different?
Yes — acidic foods can pick up a faintly metallic flavour when cooked for hours in uncoated aluminium, and they can discolour the inside of the pot. This is harmless but is the practical reason most cooks use stainless or enamelled cookware for tomato sauce and acidic stews.
Where does Big5 / Bon Voyage stand on aluminium safety?
Bon Voyage has manufactured aluminium catering pots in Thaba Nchu since 1977 — 49 years of South African families, churches, schools, and catering businesses cooking pap, stews, and large-batch meals in our pots. The current scientific consensus is unambiguous that aluminium cookware is safe for normal use. We recommend matching the pot material to the cooking: aluminium for pap and everyday stews, stainless steel or enamelled cast iron for long-simmered acidic dishes.
References & further reading
- EFSA scientific opinion on the safety of aluminium from dietary intake — European Food Safety Authority
- WHO / UN International Programme on Chemical Safety — Aluminium
- Alzheimer’s Association — Aluminum and dementia myths
- BrightFocus Foundation — Aluminum and Alzheimer’s: Is There a Connection?
- Aluhealth (International Aluminium Institute) — Aluminium and Alzheimer’s Disease
Related
- How to Cook With Aluminium Pots — technique, heat levels, cleaning the dark grey film
- How to Cook Pap Without It Burning — the South African cutting method
- Bon Voyage vs Hart Pots — An Honest Comparison
