We often focus on what we eat — but not how well our body absorbs it. Even a clean diet packed with protein, greens, and supplements can fall short if something's quietly interfering with absorption. Here are some of the most common nutrient blockers, and how to work around them.
1. Caffeine
That morning coffee or afternoon energy drink may be robbing your body of key minerals. Caffeine can reduce the absorption of iron, calcium, magnesium, and B vitamins, especially when taken close to meals or supplements. Tip: wait at least one hour before or after eating or taking vitamins before drinking coffee or tea. Try green tea or matcha if you want gentler caffeine with added antioxidants.
2. Fiber (yes, even the healthy kind)
Dietary fiber is essential for gut health — but too much (especially from supplements or high-fiber cereals) can bind to minerals like iron, zinc, and magnesium, reducing how much you absorb. Tip: balance is key — aim for 25–35 g/day, but separate high-fiber foods from your supplements by a few hours.
3. Phytates and oxalates
Plant compounds found in foods like spinach, nuts, beans, and whole grains can bind to iron, zinc, calcium, and magnesium, forming insoluble complexes your body can't use. Tip: soaking, sprouting, or lightly cooking these foods helps break down phytates and oxalates, improving mineral bioavailability.
4. Alcohol
Alcohol disrupts digestion and damages the intestinal lining, which impairs absorption of vitamin B12, folate, zinc, and magnesium. Tip: limit alcohol intake and add a B-complex or electrolyte support if you drink regularly.
5. Medications and antacids
Proton pump inhibitors (PPIs), acid blockers, and even some antibiotics can interfere with nutrient uptake, especially B12, calcium, and magnesium. Tip: if you take these medications, talk to your provider about nutrient monitoring and timing your supplements several hours apart.
6. Stress
Chronic stress increases cortisol, slows digestion, and alters gut motility — all of which can impair nutrient absorption. Tip: breathe, move, and recover. Even five minutes of diaphragmatic breathing or a short walk can reset your gut-brain axis.
7. Poor gut health
A compromised gut (due to inflammation, dysbiosis, or low stomach acid) means nutrients can't cross into your bloodstream efficiently. Tip: support digestion with probiotics, fermented foods, and mindful eating — chew thoroughly and slow down.
Takeaway
Eating healthy is only half the story. To actually benefit from the nutrients you're consuming: space out caffeine and supplements, keep fiber in balance, support gut health and stress management, and check for medication interactions.
Always consult your healthcare provider before adding or changing supplements, especially if you take prescription medications.
Want help dialing in recovery and nutrition around your training and your game? Book an evaluation at Taylor Made Integrative Therapy in Fort Worth and we'll build a plan that fits how you move and how you live.
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Dr. Taylor is a TPI-certified sports chiropractor at Taylor Made Integrative Therapy in Fort Worth, TX. He helps golfers, athletes, and active adults move better, feel better, and perform at their best — by fixing the movement issues underneath the pain. More about Dr. Taylor →