A healthy drink is any beverage that hydrates you without loading you up with added sugar, artificial ingredients, or excessive calories. Water is the gold standard, but it’s far from the only good option. Tea, coffee, certain milks, and even sparkling water all qualify, each bringing something slightly different to the table.
Water: The Baseline for Every Other Drink
Plain water has zero calories, no sugar, and no additives. It’s the simplest way to stay hydrated, and most healthy adults need roughly 11.5 to 15.5 cups (2.7 to 3.7 liters) of total fluid per day, with women generally falling at the lower end and men at the higher end. That total includes water from food and other beverages, so you don’t need to drink that entire amount from a glass.
Sparkling water is a good alternative if you find still water boring. Despite its slight acidity from carbonation, research comparing its effects on tooth enamel to regular water found the two were about the same. The one exception: citrus-flavored sparkling waters often have higher acid levels that can increase enamel damage over time. If you reach for flavored varieties, check that they don’t contain added sugars.
Coffee and Tea
Both coffee and tea are rich in antioxidants called polyphenols, which help reduce chronic inflammation and neutralize cell-damaging molecules in your body. Green and black tea tend to have the highest polyphenol content among teas, putting them close to coffee’s antioxidant levels. For most adults, up to about 400 milligrams of caffeine per day (roughly two to three 12-ounce cups of coffee) is considered safe by the FDA.
The catch is what you add to them. A black coffee or plain tea has virtually no calories. Once you start pouring in flavored syrups, whipped cream, or several tablespoons of sugar, you’ve turned a healthy drink into dessert. If you need sweetness, start by cutting your usual amount in half and adjusting from there.
Herbal Teas
Herbal teas are caffeine-free and offer their own set of benefits depending on the plant. Hibiscus tea has the strongest clinical backing: a human trial found that drinking it lowered blood pressure in adults with pre-hypertension or mildly elevated blood pressure. Peppermint tea shows strong antioxidant and antimicrobial properties in lab studies, and chamomile, while widely used for relaxation, has demonstrated antimicrobial activity as well, though its calming reputation hasn’t been confirmed in human clinical trials.
These teas are essentially calorie-free when brewed without sweetener, making them a solid choice if you want flavor and variety without caffeine.
Milk and Plant-Based Alternatives
Cow’s milk delivers 8 grams of protein per cup along with naturally occurring calcium and vitamin D. It’s a nutritionally dense drink, though the calories add up, especially with whole milk. If you’re choosing between skim, low-fat, and whole, the main trade-off is fat content and calories rather than protein.
Plant-based milks vary dramatically in nutrition. A large analysis of milk alternatives found that only 16% had protein levels matching or exceeding cow’s milk. The median protein content across plant milks was just 2 grams per cup, compared to 8 grams in dairy. Soy milk tends to come closest to cow’s milk nutritionally, while almond and oat milks are often much lower in protein. About two-thirds to three-quarters of oat, soy, and almond products are fortified with calcium and vitamin D, but you need to check the label, because not all of them are.
Kombucha and Fermented Drinks
Kombucha is fermented tea that contains beneficial bacteria, which may support gut health. The main concern is sugar. Some brands are lightly sweetened, while others pack a surprising amount into each bottle. Check the nutrition label for added sugar content, keeping in mind that 4 grams of added sugar equals one teaspoon. If a single bottle contains 16 grams, you’re drinking four teaspoons of sugar.
The World Health Organization recommends keeping free sugar intake below 10% of your total daily calories, with additional benefits if you stay under roughly 25 grams (6 teaspoons) per day. A high-sugar kombucha can eat into that limit quickly, so choosing lower-sugar options matters.
Why Fruit Juice Isn’t as Healthy as It Seems
100% fruit juice sounds healthy, but it behaves very differently in your body than whole fruit does. Juice lacks the fiber that slows digestion, so its natural sugars hit your bloodstream rapidly. Harvard researchers found that fruit juice’s high glycemic index, meaning how fast it spikes blood sugar, may explain its link to increased type 2 diabetes risk. Whole fruits, by contrast, were associated with reduced risk.
A small glass of juice (4 to 6 ounces) occasionally is fine, but treating it as your go-to hydration source isn’t ideal. If you enjoy fruit flavor in your water, try slicing whole fruit into a pitcher and letting it infuse.
Sports Drinks: Useful in Specific Situations
Sports drinks contain sodium, potassium, and carbohydrates designed to replace what you lose through heavy sweating. They serve a real purpose during prolonged or intense exercise lasting more than an hour, especially in heat. For a regular workout under 60 minutes, or for sitting at your desk, water does the job without the added sugar and calories that sports drinks carry.
What Makes a Drink Unhealthy
The single biggest factor separating healthy drinks from unhealthy ones is added sugar. Sodas, sweetened iced teas, energy drinks, and many bottled smoothies can contain 30 to 60 grams of sugar per serving, blowing past the WHO’s 25-gram daily ideal in a single bottle. That added sugar contributes to weight gain, blood sugar spikes, and increased risk of chronic disease over time.
Beyond sugar, watch for calorie-dense additions like cream, flavored syrups, and full-fat coconut milk in blended drinks. A “healthy” smoothie from a chain restaurant can easily exceed 500 calories. The drink itself isn’t the problem. It’s what gets added to it. The simplest rule: the fewer ingredients on the label, the better. And if the first ingredient after water is some form of sugar, it’s probably not the healthy drink you’re looking for.