

Struggling to drink plain water but easily downing cups of coffee or tea? You’re not alone, but this habit might not be as beneficial as you think. While these beverages appear harmless, they may not deliver the hydration you expect.
Naturopath Julia Monnier, in an interview with Marie Claire, makes it clear: “Yes, coffee, tea, and herbal infusions are water-based, but consumed in large amounts, they don’t hydrate—and can have the opposite effect.” In other words, they might not count toward the daily 1.5-liter water goal and some might actually promote dehydration.
Why Coffee, Tea, and Certain Herbal Teas Are Not Hydrating Drinks
Coffee is often the main culprit due to caffeine, known for its diuretic effect. It stimulates the kidneys to accelerate water elimination rather than retention, leading to dehydration.
Tea fares little better. Theine (tea’s caffeine) acts gentler but retains diuretic properties. Worse, it can interfere with nutrient absorption like iron, vitamins, and minerals. Herbal teas depend on ingredients—some, especially “detox,” include draining plants that increase water loss.
Julia Monnier offers an exception: “For a hydrating warm drink, rooibos is best.” Rooibos tea, free of caffeine and theine, provides hydration and comfort in one cup.
Smarter Alternatives and Simple Tips to Drink More Water
For true hydration, plain water is key. It’s the only drink that maintains fluid balance—not soda, juice, or alcohol, which combine diuretic effects with excess sugar or salt. Even salty broths can cause water retention.
If plain water bores you, enhance it with lemon juice, mint, or cucumber slices for an appealing twist without sugar or additives.
Here are tips to build better hydration habits:
- Keep a glass of water by your bed or in the bathroom to drink after waking;
- Carry a filled water bottle with you—on your desk, in your bag;
- Set a daily goal: 6 to 8 glasses hit 1.5 liters;
- Use a hydration reminder app;
- Drink more during hot weather, workouts, or a fever.
With just a few changes, hitting your daily water goal becomes easier—no need for your morning coffee or afternoon tea to shoulder the load.
**1,5 L d’eau par jour : faut-il inclure le thé, le café et les infusions ?**
This article first appeared on doctissimo.com – Author: Magali Régnier