Yes, drinking coffee can interfere with zinc absorption due to tannins and polyphenols binding to the mineral, making it less available, and caffeine can also increase its excretion, though it's less impactful on zinc than on iron; timing your coffee consumption (an hour before or after meals/supplements) helps minimize this effect.
In a more recent study, published in Nutrients in September 2021, researchers at Wroclaw Medical University in Poland concluded that in addition to iron, drinking coffee after eating also impairs the absorption of calcium, zinc, magnesium, and phosphorus.
Caffeine has a mild diuretic effect, which leads to an increase in urination. As a result, water-soluble vitamins, such as B-vitamins and vitamin C can be depleted due to fluid loss. Research also demonstrated that the higher the level of caffeine, the more it interfered with vitamin D absorption.
Time your coffee wisely: Try to avoid drinking coffee immediately before or after taking supplements that contain iron, calcium, zinc, or magnesium, as it may interfere with the absorption of these nutrients.
Conditions that may cause zinc deficiency include:
Phytate, which is present in staple foods like cereals, corn and rice, has a strong negative effect on zinc absorption from composite meals. Inositol hexaphosphates and pentaphosphates are the phytate forms that exert these negative effects, whereas the lower phosphates have no or little effect on zinc absorption.
Zinc deficiency typically responds well to supplementation and correction of contributing dietary factors. Symptoms often improve rapidly. Diarrhea may resolve within 24 hours, and skin lesions generally heal within 1 to 2 weeks.
Here are six supplements you should avoid taking with coffee:
4 Supplements and Medications to Avoid Taking With Zinc
Medical experts advise using unsweetened cocoa powder to boost heart health via powerful flavour flavanols. This addition increases nitric oxide production, which relaxes blood vessels and improves overall blood circulation.
As a chemical, caffeine increases production of urine, which means caffeine is a diuretic. But most research suggests that the fluid in caffeinated drinks balances the diuretic effect of typical caffeine levels. High doses of caffeine taken all at once may increase the amount of urine the body makes.
However, if you consume an excess amount of coffee, tea, cocoa or cola, especially if you have a poor diet, intestinal disorders, a chronic medical condition, drink excessive alcohol or are pregnant, the caffeine you consume could put you at risk for an iron deficiency.
As is the case with iron, avoid taking zinc with calcium, magnesium, or copper. Take zinc 2–3 hours apart from these minerals as they reduce zinc absorption in the intestines. Do not take zinc with tetracycline or ciprofloxacin antibiotics. These also inhibit zinc absorption.
Dietary protein levels positively correlate with zinc uptake [77,154]. Human zinc absorption is substantially higher in the presence of protein from animal sources than plant-based protein [181] and the addition of animal protein to vegetable-based food significantly improved its zinc bioavailability in vivo [182].
Taking zinc supplements by mouth long-term and in high doses can lead to copper deficiency. People with low copper levels might have brain and nervous system issues. Those issues may include numbness and weakness in the arms and legs.
The food highest in zinc is oysters, which contain significantly more zinc per serving than any other food, followed by other shellfish like crab and lobster, and then red meats such as beef, lamb, and pork. Other excellent sources include poultry, nuts (cashews, pumpkin seeds), legumes (lentils, chickpeas), dairy products, eggs, and fortified cereals, though zinc from plant sources is less easily absorbed.
Lower concentrations of both vitamin D3 and zinc could be used for effective treatment, thus reducing possible side effects from vitamin D3 and zinc. Vitamin D3 and zinc in combination may be a promising and cheap option to treat dysregulated immune response in various conditions.
Therefore, caffeine-induced urinary loss of calcium and magnesium is largely attributable to a reduction in calcium and magnesium renal reabsorption, although the physiological mechanism and tubular segment affected remain to be established.
Caffeine is rapidly and completely absorbed within an hour following ingestion. It is distributed throughout body water and readily crosses cell membranes including the brain. Its primary mechanisms for stimulatory activity appear to be the blocking of adenosine receptors and inhibition of phosphodiesterases.
Coffee can block your body from fully absorbing important nutrients like iron and calcium. Pairing coffee with citrus, fried foods, or salty meals may upset your stomach or affect heart health. For a healthier boost, enjoy coffee with oats, berries, or nuts instead of dairy or fortified cereals.
Zinc is a critical trace mineral involved in various biological processes, including immune function, DNA synthesis, and cell division. However, it also plays a vital role in brain health by supporting neurotransmitter functions such as serotonin and dopamine, which regulate mood and cognitive performance.
Although there are very few studies on the link between zinc and sleep, there are some that show a relationship between zinc intake, blood zinc levels and sleep quality. In an entire population, zinc-deficient individuals had short sleep durations. In addition, people aged 65 and women were more affected.
The best source of zinc is oysters, but red meat and poultry are also good options. Other sources of zinc are: different kinds of seafood. nuts.
Boosting zinc absorption
Soak, sprout, or ferment grains and legumes – This could be as simple as soaking your beans or grains for a few hours before cooking and eating fermented grains like sourdough bread. These methods reduce phytates, which can block zinc absorption.