Are Milkshakes Good For You? The Surprising Truth

Getting this wrong usually doesn’t hurt you overnight, but it does add up. Regular large shakes can push your blood sugar, weight and cholesterol in the wrong direction before anyone notices a problem.

A clearer picture of calories, sugar, fat and real portion sizes helps you decide when a milkshake is just a fun treat and when it starts crowding out the drinks that actually support your health.

Are Milkshakes Good For You? The Surprising Truth

Milkshakes are fine for most adults as an occasional dessert drink, but they are not healthy if you sip them regularly like milk or smoothies. If you are wondering whether milkshakes are good for you or bad for you, the clearest answer is that they are calorie-dense, sugar-heavy desserts that can fit rarely in a balanced diet but can push blood sugar, weight and cholesterol in the wrong direction if you have them often.

A classic milkshake is made by blending ice cream with milk or a dairy alternative, then often adding flavored syrups, whipped cream or mix-ins such as cookies or candy. A typical fast-food or diner serving is about 12–16 oz in volume, although some chains sell 20 oz or larger cups. That makes a milkshake both a drink in form and a dessert in nutrition, because you sip it like a beverage but take in the sugar and fat load of a rich ice cream dish rather than getting hydration or fiber.

Those 50–90 g of sugar already meet or exceed widely used daily added-sugar limits, which are about 25 g per day for many women and 36 g per day for many men. A single large milkshake can therefore deliver around one and a half to three days worth of added sugar for many adults in one go, which is why frequent milkshakes are linked with weight gain, higher blood triglycerides and a greater chance of developing insulin resistance over time.

Milkshakes do have some pros, mainly because they start with milk or ice cream. A dairy-based 12–16 oz shake usually supplies around 8–12 g of protein and roughly 250–400 mg of calcium, similar to about one to one and a half cups of milk, and you can read more about the protein side in do milkshakes have protein the surprising truth. The 400–700 kcal of energy in a shake can help someone who struggles to maintain weight or who has trouble chewing enough solid food, and the cold creamy texture may feel soothing on a sore or irritated throat.

The downsides are bigger for most people. A typical shake is very low in fiber and high in rapidly absorbed sugar, so it spikes blood glucose and insulin much more than eating the same ingredients as whole fruit and unsweetened yogurt, which over years can contribute to type 2 diabetes in susceptible people. The 10–20 g of saturated fat found in many shakes can raise LDL, or bad, cholesterol when eaten often, and the 400–700 extra kcal per serving make weight gain very likely if you do not reduce calories somewhere else.

For practical purposes, plan around a milkshake the way you would plan around cake or pie, counting it as a rich dessert drink rather than part of your daily drinks or nutrition routine.

How Often to Have a Milkshake Without Derailing Your Health

For most generally healthy adults, having about one standard 12–16 oz milkshake per week is a sensible upper limit, and drinking a full-size shake three times every week is usually too much for weight and blood sugar unless you deliberately trim other calories and sugar. There are no special health benefits to drinking milkshake three times a week beyond extra energy, which only helps if you genuinely need to gain weight or are recovering from illness under medical guidance.

A typical 16 oz fast-food shake supplies roughly 500–700 kcal, 60–90 g sugar and 10–20 g saturated fat, which is close to the energy in a full meal for many adults. A 30–45 minute brisk walk often burns only about 150–250 kcal, so a single large shake can undo the calorie burn from several walks if your usual meals and snacks stay the same.

Having a large milkshake late at night can be especially hard on reflux and sleep, because high fat slows stomach emptying and lying down soon after drinking makes acid more likely to move up into the esophagus. If you really want a milkshake at night, keep it small, about 4–8 oz, choose lower-fat milk or yogurt, and skip whipped cream and heavy toppings to reduce reflux risk and overnight calorie load.

Homemade milkshakes are usually better for you than drive-through versions because you can pour a smaller 8–12 oz portion, control how much ice cream and syrup go in, and swap some of the ice cream for milk or yogurt. If you want a milkshake drink that is on the healthier side, base it mostly on milk or yogurt, add fruit for flavor and natural sweetness, and use only a small amount of ice cream or a scoop of protein powder so you get more protein and less sugar per glass.

If you blend mainly fruit with yogurt or milk and little or no ice cream, you are really making a fruit smoothie, and many of the same questions discussed in is fruit juice healthy the surprising truth apply because you still take in a lot of natural sugar very quickly. A simple whey-based protein shake made with water or unsweetened milk usually has far less sugar and more protein than a milkshake, which often makes it the better everyday choice for muscle recovery or appetite control.

Side Effects of Milkshakes: Diarrhea, Reflux and Blood Sugar Spikes

Milkshakes can absolutely cause diarrhea and gut upset, especially if you already have diarrhea, are lactose intolerant, or live with a hernia. For most people a small milkshake isn’t dangerous, but using a milkshake during diarrhea usually prolongs it, and a big shake can be enough to trigger loose stools on its own.

Lactose from milk and ice cream is a common culprit behind “milkshake and diarrhea” problems. If your small intestine doesn’t make enough lactase enzyme, unabsorbed lactose moves into the colon, where bacteria ferment it and produce gas, cramping, bloating and diarrhea, often within a few hours of drinking the shake. Larger servings mean more unabsorbed lactose, so a 16 oz shake is far more likely than a 4–8 oz one to cause trouble.

Big, high‑sugar, high‑fat shakes (for example a 16 oz shake with 60 g or more of sugar) sit in the stomach longer, slow emptying, and can push stomach contents back up into the esophagus. That extra pressure often worsens reflux, bloating and chest burning, especially if you lie down soon after drinking. People with hiatal or abdominal hernias usually do better with smaller, lower‑fat shakes if their care team allows milkshakes at all, because extra volume and gas raise pressure in the belly.

For anyone with diabetes or prediabetes, a standard shake’s sugar load can spike blood glucose quickly. If you choose to have one, limiting yourself to about 4–8 oz, sipping it slowly, and having it with a meal that contains protein and fiber is safer for blood sugar than drinking a full 16 oz shake alone.

Those with high cholesterol, heart disease or fatty liver need to be especially cautious, since frequent large shakes add saturated fat and added sugar that can worsen cholesterol patterns and liver fat over time. After a bout of severe diarrhea, rich, high‑fat shakes are usually a poor first choice; reintroducing dairy slowly with small amounts of milk or yogurt lets you see what your gut will tolerate before trying a milkshake again.

Safety of Homemade Milkshakes With Fruit and Raw Eggs

Homemade milkshakes can be a bit gentler and more nutritious than fast‑food shakes, but they only lean healthier if you keep them small and choose ingredients carefully. Adding fruit gives some real benefits, and a soy milkshake or other plant‑based version can help if you’re lactose intolerant, yet every milkshake is still a dessert, not an everyday health drink.

Basic homemade blends of milk, ice cream and fruit usually contain less sugar and more real dairy or fruit than many fast‑food shakes, which often rely on syrups and mixes. For example, a 12 oz homemade shake with 1 cup milk, 1/2 cup ice cream and a banana might land around the mid‑300 calorie range, while a similar‑sized fast‑food shake can easily climb much higher with extra syrups and whipped cream.

Fruit in your milkshake brings natural sweetness, vitamin C and some fiber, which is why fruit feels good in a milkshake. A medium banana plus about a cup of berries can add roughly 10–20 g of natural sugar along with fiber that slows absorption a bit. An apple milkshake or mango shake will be similar: more vitamins and plant compounds than a plain vanilla shake, but still a significant sugar load, especially if you also add honey or flavored syrups.

Pineapple‑based shakes add tangy flavor and vitamin C but can be quite sugary and acidic; if that combination interests you, is pineapple milkshake healthy benefits risks explained covers the pros and cons in more detail. For diabetes, fatty liver or weight management, a smaller serving with mostly fruit and milk or yogurt is usually safer than a large pineapple or mango shake from a shop.

Protein additions such as Greek yogurt, unsweetened protein powder, peanut butter or soy milk make a shake more filling and help blunt blood sugar spikes compared with syrup‑heavy versions. Our piece Do Milkshakes Have Protein? The Surprising Truth looks more closely at how different ingredients change protein content, but as a rule, including at least one protein source moves your shake closer to a snack and away from pure sugar hit.

Plant‑based milkshakes made with soy, pea, or oat milk are usually lower in saturated fat and free of lactose, which can help if regular milkshakes cause bloating or diarrhea. Checking labels still matters, because many flavored soy or oat milks contain several teaspoons of added sugar per cup.

Raw egg in a milkshake raises a real salmonella risk, especially for pregnant people, young children, older adults, and anyone with a weakened immune system. If you like the idea of an eggy “thick” shake, using pasteurized shell eggs or liquid pasteurized egg products, or choosing a cooked custard‑style base, cuts that infection risk substantially.

Powdered milkshake mixes usually combine sugar, flavorings, thickeners and sometimes added vitamins or protein; some are designed as occasional treats, others as meal‑replacement drinks. Reading the nutrition label for serving size, sugars and protein helps you see whether that mix behaves more like a dessert or a balanced meal in your day.

Is a Milkshake a Drink or a Dessert? Storage, Safety and Making One

A milkshake counts as a dessert you drink: it is a beverage in your glass, but nutritionally it behaves like ice cream. So a milkshake is both a drink and a food, and for health decisions you treat it as a dessert rather than as everyday milk. People often eat a milkshake with burgers and fries, yet that combo piles on calories, sugar and saturated fat in one meal. If you want a milkshake, pairing it with a lighter main such as a grilled chicken sandwich, a small salad, or even having the shake alone as dessert usually works out better.

Keep a dairy milkshake at room temperature for no longer than about 2 hours. In hot conditions—inside a car or at a picnic—limit that to 1 hour, because bacteria multiply quickly in milk and cream. After that time, throw the shake away; don’t return it to the fridge. If you plan to save part of a shake, cover it and refrigerate within an hour and finish it within about 24 hours. Expect some melting and separation; give it a short stir or a quick blend before drinking. For longer storage, freeze a tightly sealed container for several days or weeks; ice crystals will form and the texture will be firmer, more like hard ice cream. Avoid reheating a dairy shake in the microwave—warmed dairy can curdle and encourage bacterial growth. Milkshakes are meant to be enjoyed cold or partly melted.

Signs a milkshake has expired include a sour or cheesy smell, curdled or grainy clumps, foamy layers that do not blend back together, or an off flavor. Any sign of mold, changing color, or fizzing means you should discard it immediately, even if the date on the cup or ingredients has not passed. If you are unsure how long it sat in the fridge, treating it as unsafe and throwing it out protects you from food poisoning.

A Boston or hand-spun milkshake usually means the worker blends ice cream and milk to order in a metal mixing cup, sometimes with cookie pieces, syrups, or candy mixed in, then pours it into your glass. That technique can make the shake thicker and fresher tasting, but the nutrition is similar to any shake that uses the same amount of ice cream, milk, and mix-ins, and can even be higher in sugar and calories.

For making milkshakes at home, a countertop blender is usually safer and easier than a food processor, because the tall jar and tight lid handle liquids without splashing as much. Food processors tend to leak with thin mixtures and expose more of the spinning blade when the lid comes off. Whatever you use, keep the lid firmly on, fill the container no more than two thirds full, and start on low speed to reduce spills. Always unplug the machine before removing blades or reaching inside to clean, and never push ingredients down with your fingers or utensils while it is running.

Some online ideas, such as a chicken milkshake that blends cooked meat with milk or ice cream, raise both food-safety and taste concerns. Pureeing meats with dairy creates a thick, warm mixture that can spoil fast and support bacterial growth if it sits out, and most people find the flavor unpleasant. Those kinds of savory, finely blended meals really belong only in medically directed pureed diets planned with a care team, not as casual snacks.

Healthier Alternatives and What to Do Next

Healthier milkshake drinks exist, yet they still behave like desserts, so the goal is to choose versions with less sugar and saturated fat and to have them less often. The closest thing to a healthy milkshake to drink would be a small, yogurt-based or protein-fortified shake with minimal added sugar, or a home diet chocolate milkshake made with unsweetened cocoa, low-fat or lactose-free milk, and fruit or a low-calorie sweetener for sweetness. Those swaps cut calories and saturated fat compared with a typical fast-food chocolate shake, though they still sit in the treat category.

To shrink the damage when you really want a classic shake, order the smallest size, ideally around 8–12 oz, skip whipped cream and candy mix-ins, and share a large cup instead of finishing it alone. Avoid pairing a full milkshake and fries in the same meal if you can, since that stacks a high-sugar drink on top of a high-fat side and easily pushes the meal into hundreds of extra calories. Choosing either fries or a shake, plus water or unsweetened tea, lowers both the health cost and the actual cost for a milkshake outing.

For everyday drinking, reach for yogurt-and-fruit smoothies, simple protein shakes with little or no added sugar, or flavored milks where you control how much mix or syrup goes in. Milkshake mixes and bottled shake drinks vary widely, from low-sugar high-protein products to very sweet dessert-style formulas, so reading the panel matters. For store-bought flavored milks, is nesquik milkshake healthy the sweet truth explains what to check so you can fit them into your day more confidently.

Whenever you pick a ready-to-drink shake or mix, check the label for calories per serving, grams of added sugar, grams of saturated fat, and grams of protein, and compare those numbers with your daily targets. Many dessert-style shakes pack more than a meal’s worth of calories and added sugar into one bottle, while some meal-replacement shakes are designed to give more protein with less sugar, which may suit your plan better.

For diabetes, limit a milkshake to about 8 oz and choose a no-sugar-added or low-sugar recipe. Count the shake toward the meal’s carbohydrate allowance so you can plan the rest of the meal and reduce the chance of a large blood-sugar spike. People with heart disease or high cholesterol should have milkshakes less often and make them with low-fat dairy or fortified plant milks. Skip whipped cream and rich mix-ins such as full-fat ice cream or chocolate sauce; they add saturated fat and extra calories. When reflux is a problem, pick a smaller, lower-fat shake and avoid trigger flavors like chocolate or mint. Don’t have a large shake right before bed, since fat and late eating can worsen heartburn. If you’re lactose intolerant, use lactose-free cow’s milk, soy or other fortified plant milks, or low-lactose yogurts to keep enjoying an occasional small shake without symptoms. Before a colonoscopy or surgery, follow your clinic’s written prep instructions—many ask you to avoid dairy and colored drinks the day before.

What To Do Right Now

Milkshakes aren’t bad when they’re planned treats, not daily habits, and a few quick steps can get you there.

Questions People Ask