You’re winding down, but your mind is racing. Maybe you’ve tried breathing exercises or a calming playlist, yet that jittery feeling lingers. Before you blame your thoughts, take a look at what’s in your cup. As a health editor who covers sleep and mood, I’ve learned that certain drinks can seriously disrupt your nervous system when the sun goes down. Dietitians point to three common culprits that are worth swapping out if you want calmer evenings.
Why what you drink matters for anxiety
Your brain and gut are in constant conversation. Beverages containing stimulants or compounds that spike stress hormones can keep you in a low-grade fight-or-flight state, even when you’re trying to relax. Nighttime anxiety often isn’t just in your head — it can be biochemical. Here are the three drinks dietitians say could be making it worse.
1. Caffeinated coffee and tea (especially after 2 p.m.)
Coffee is the obvious offender, but it’s not just the late-afternoon espresso that’s a problem. Even a seemingly innocent cup of black tea or green tea contains enough caffeine to interfere with your sleep cycle and raise cortisol levels. For sensitive individuals, caffeine can trigger palpitations, restlessness, and a spiral of anxious thoughts. The half-life of caffeine is around 5 hours, meaning that a 3 p.m. coffee still has a quarter of its stimulant effect at 11 p.m. Dietitians recommend cutting off all caffeine by early afternoon — and consider that even decaf contains a small amount of caffeine.
A simple swap: Try a naturally caffeine-free herbal tea like chamomile, lemon balm, or passionflower in the evening. These are traditionally used to support relaxation.
2. Sugary sodas and sweetened energy drinks
That afternoon soda or “natural” energy drink might give you a quick lift, but the crash that follows can mimic — or worsen — anxiety symptoms. High-fructose corn syrup and refined sugar cause rapid spikes and drops in blood glucose. When your blood sugar drops, your body releases adrenaline and cortisol to compensate, a response that feels remarkably similar to a panic attack: shakiness, irritability, and a pounding heart. Many store-bought sodas and “healthy” sparkling drinks are loaded with sugar or artificial sweeteners, which can also disrupt your gut microbiome and mood.
3. Alcoholic beverages (including “nightcaps”)
Alcohol is a depressant that initially makes you feel drowsy, but it’s a notorious saboteur of deep sleep. As your liver metabolizes alcohol, your body experiences a rebound effect: heart rate increases, blood sugar fluctuates, and you wake up more frequently during the second half of the night. This fragmented sleep leaves you groggy and more vulnerable to anxious feelings the next day. Dietitians call this phenomenon “hangxiety.” Even one glass of wine or beer can disrupt your circadian rhythm and elevate nighttime anxiety, especially if you drink within 2–3 hours of bedtime.
How to break the cycle
If you suspect one of these drinks is feeding your nighttime anxiety, try a simple test: eliminate it for 5–7 days and note how you feel. Replace it with water, sparkling water with a splash of lemon, or a calming herbal infusion. Pay attention to your sleep quality and your sense of ease at night. The goal isn’t to live a monkish existence — it’s to give your nervous system a break when it needs it most.
