Most people worry about caffeine or alcohol when it comes to consuming too much of a good thing. But experts say the real chemical risks might be hiding in foods you eat without thinking twice.
According to Drug Testing Kits UK, several common foods contain bioactive compounds that can affect the body in surprisingly drug-like ways when consumed in large quantities.
“Your body doesn’t recognize the difference between a substance from a snack or a pill,” explains James Gunter, a health expert at Drug Testing Kits UK. “It just reacts to the chemistry.”
Here are three foods you may want to rethink—or at least portion with care:
1. Liquorice Root
Black liquorice contains glycyrrhizin, a compound that mimics cortisol, the stress hormone. Research shows that just 100mg a day for two weeks can raise your blood pressure by up to 10 mmHg and drop potassium levels, increasing the risk of arrhythmia and fatigue.
“Skip the black liquorice if you’re taking medication or have heart issues. Two pieces a day is enough for anyone, regardless of how much you love the taste,” says Gunter.
2. Poppy Seeds
A favourite bagel topping, poppy seeds, contains trace amounts of morphine and codeine alkaloids. While unlikely to cause harm in moderation, eating large quantities, especially unwashed seeds, can cause sedation, delayed reaction time, or even false positives on drug tests.
“A poppy seed bagel every now and then is harmless,” Gunter says. “But daily high intake—especially from unwashed seeds—can begin to act on your nervous system in ways most people don’t expect.”
3. Brazil Nuts
Brazil nuts are a top source of selenium, an essential antioxidant. But they pack 68–91 micrograms per nut. Just 15–20 nuts can exceed 1,000 mcg, well past the recommended safe limit, and may cause symptoms that mimic heavy metal poisoning, like fatigue, nerve pain, and hair loss.
“Four or five Brazil nuts give you all the selenium benefits you need,” Gunter says. “Any more than that, and you’re turning a health food into something that poisons your system like heavy metals.”
Final Thought:
“What most people don’t realize is that the line between food and drugs is surprisingly thin from a chemical perspective,” Gunter says. “Your body doesn’t care if it comes from a plant, a prescription, or a snack—it just processes compounds.”
If you’re leaning on any of these foods daily, it might be time to scale back.