Magnesium is crucial for over 300 bodily functions, and supplementation can be beneficial for many. However, certain food combinations can hinder magnesium absorption or cause unwanted side effects. Here’s a guide to 7 foods to be mindful of when taking magnesium:
Calcium-Rich Foods
Why avoid? Calcium and magnesium compete for absorption in the gut. Consuming large amounts of calcium alongside magnesium can reduce magnesium uptake.
Examples: Dairy products (milk, cheese, yogurt), fortified plant milks, leafy greens (kale, spinach – though these also contain magnesium, moderation is key when supplementing).
Foods High in Phytic Acid
Why avoid? Phytic acid, found in grains and legumes, binds to minerals like magnesium, making them less available for absorption.
Examples: Beans, lentils, whole grains (wheat, rice, corn), nuts, and seeds. Soaking, sprouting, or fermenting these foods can reduce phytic acid content.
Foods Containing Oxalates
Why avoid? Similar to phytic acid, oxalates bind to magnesium, reducing its bioavailability.
Examples: Spinach, rhubarb, beets, chocolate, nuts, and tea. Cooking can reduce oxalate levels in some foods.
Processed Foods & Sugary Drinks
Why avoid? These foods often deplete magnesium levels in the body. High sugar intake increases magnesium excretion through the kidneys.
Examples: Fast food, sugary cereals, soda, candy, pastries.
Coffee & Caffeine
Why avoid? Caffeine can have a diuretic effect, increasing magnesium loss through urine.
Consider: Moderate caffeine intake is usually fine, but excessive consumption alongside magnesium supplementation may negate some benefits.
Alcohol
Why avoid? Alcohol interferes with magnesium absorption and increases its excretion. Chronic alcohol use can lead to magnesium deficiency.
Recommendation: Avoid alcohol consumption when taking magnesium supplements.
High-Fiber Foods (in excess)
Why avoid? While fiber is generally healthy, very high fiber intake can potentially bind to magnesium and reduce absorption.
