We’ve all heard the "IT-DRINK" matcha is a superdrink. Celebrities endorse it, wellness influencers swear by it, and your local café likely features at least three matcha-based drinks on the menu. Touted as a powerhouse of antioxidants and a natural energy booster, matcha has earned a loyal following around the world. But here's something hardly anyone is discussing: matcha may be secretly acting against your health—especially if you're getting your iron from plant-based foods.".Matcha originates from Camellia Sinensis, the same plant that gives us green and black tea. However, unlike its cousins, matcha is shade-grown before harvest and then stone-ground into a fine, jade-colored powder. This growing method boosts chlorophyll and antioxidant content, making it denser in nutrients and polyphenols.Consuming matcha means ingesting the entire leaf in powdered form, which increases its antioxidant profile significantly. According to studies, matcha's polyphenols, especially catechins such as epigallocatechin gallate (EGCG), are strong antioxidants that suppress inflammation and inhibit oxidative stress. Research indicates that daily consumption can lower heart disease risk, improve brain function, and even boost metabolism.It sounds like a nutritional dream—but this same high concentration of polyphenols may come with unintended effects.What Are Matcha’s Hidden Drawbacks?Here’s the kicker: the polyphenols that make matcha so nutritious can also interfere with iron absorption, particularly non-heme iron, which is the form found in plant-based foods like lentils, leafy greens, legumes, and tofu.According to nutrition experts, matcha tea can affect iron absorption by binding the non-haem iron found in many plant foods. It contains catechins and tannins—both polyphenols—that bind to iron in the digestive tract, preventing it from being absorbed.Iron that simply passes through your system, unused. Studies suggest that this interaction can reduce iron absorption by up to 50%, depending on individual biology, what food you’re eating, and the timing of consumption. For meat-eaters, this isn’t usually a big issue—haem iron, the kind found in meat and seafood, is not significantly impacted. But vegetarians, vegans, and those who already struggle with iron levels could be at risk.Why Vegetarians Should Pay Extra Attention?Iron deficiency is already one of the most common nutrient deficiencies globally, particularly in women, children, and those following plant-based diets. Symptoms like fatigue, weakness, dizziness, pale skin, and headaches are often brushed off as general tiredness—but may be signs of something deeper.Consuming large amounts of matcha daily—especially alongside or right after plant-based meals—may worsen or even trigger iron deficiency over time.If you’ve recently embraced matcha as part of a wellness routine but are also noticing changes in your energy or frequent fatigue, it might be time to take a closer look at your iron intake—and when you’re drinking that matcha latte.Nutrition experts recommend leaving at least an hour or two between your matcha consumption and iron-rich food. In this way, the binding effect that polyphenols cause on iron can be lessened.Pairing iron-rich foods with foods rich in vitamin C sources also has the ability to enhance iron intake and stabilize against the effects of polyphenols.Still, if you’re someone with existing iron concerns, a personal or family history of anemia, or are pregnant, it's wise to discuss your matcha habits with a healthcare provider.Who Should Be Cautious with Drinking Matcha?Beyond iron absorption, there are other health considerations when it comes to matcha, particularly in certain groups.When and How You Drink Matcha Counts?You don’t have to give up matcha altogether. According to the EFSA (European Food Safety Authority) and data compiled from clinical studies, individuals with the following conditions should use caution:Pregnancy and breastfeeding: Limited studies exist on high EGCG intake during pregnancy. Some countries cap daily EGCG consumption at 120 mg for pregnant women.Because matcha is a concentrated form, moderation and medical consultation are recommended.Children: Few studies have assessed safety in children. EGCG consumption in children has been reported as 5–87 mg/day, but long-term effect is not known.Older adults (65+): Although some clinical trials involved older subjects, stronger studies are required. There is also a possibility of drug interactions in this group.Individuals with liver problems: More than 800 mg of EGCG per day has been associated with liver toxicity in certain instances. Individuals with a pre-existing liver condition should discuss its use with their doctor prior to ingesting matcha extracts.Those with high blood pressure or esophageal cancer risk: Certain research has indicated that green tea may raise blood pressure or pose a risk of esophageal cancer when extremely hot.Matcha is not the villain, it's still a nutrient-rich, antioxidant-filled drink with much to bring to the table. But as with most health fads, it's not a one-size-fits-all solution. Moderation, timing, and customization are necessary.As a vegetarian, vegan, pregnant woman, or suffering from health conditions such as anemia, liver disease, or hypertension, your matcha behaviors might be in for a tweak. That doesn’t mean cutting it out—it means being intentional.Speak to a healthcare provider, especially if you’re taking supplements or medications, and consider routine blood work to check iron levels if matcha is a regular part of your diet because in the world of wellness, even something as green and glowing as matcha can have a shadow side.