Who should build their smoothie differently?

Most people can use the same build: about 30 g of protein, whole fruit, a spoon of seeds or oats and no added sugar. A few should change it. On a GLP-1 drug, make it smaller with protein first. With diabetes, use berries and skip juice, honey and dates. For kids, no added sugar and no powder. When pregnant, no powder. On warfarin, keep the greens the same from day to day.

Smoothie advice is written for a healthy adult who wants breakfast. Plenty of the people who use it aren’t that person. Someone on Ozempic can barely finish a glass, a parent wants something their six year old will drink, and someone on warfarin has been told to watch their greens. Each of them can still use a smoothie, built a little differently, and none of it touches a medicine.

On a GLP-1 drug like Ozempic

GLP-1 drugs such as semaglutide (Ozempic, Wegovy) and tirzepatide (Mounjaro, Zepbound) turn appetite down, and many people find a full meal hard to finish. A 2025 joint advisory from four US obesity and nutrition groups suggests small, frequent meals when hunger is low, and names “healthfully prepared smoothies and protein drinks with fruits, vegetables, and various unsweetened milks or yogurt” as foods people often find easier.

The small glass is our version: half a cup of 2% milk, 6 oz of plain nonfat Greek yogurt and half a cup of frozen strawberries (2.6 oz). It’s about 12 oz, with 187 calories and 22 g of protein. The same advisory says avoiding fatty or high fiber foods in the first few days of treatment can help with nausea, so keep it plain at first. Once you’re past that, half an ounce of chia adds the fiber it’s short on.

Protein is the part to protect, since you’re eating less of everything. The advisory notes that 1.2 to 1.6 g per kg a day has been proposed during weight loss. bodyfat.guide’s GLP-1 page covers what the drugs do to muscle, and What protein shake should I drink on Ozempic? has the glass in full. Your prescriber handles the medicine.

With diabetes

A smoothie can work with diabetes if it’s built for it. Put protein and fiber first, pick berries, and leave out juice, honey and dates, which bring sugar with little else. A glass like the blueberry oat, with 16 g of sugar, 9 g of fiber and 31 g of protein, is a better start than one built on a banana and mango.

The blending studies were in healthy people. In the 2022 finger-stick trial, 20 healthy college students had a smaller rise from blended apple and blackberries than from the same fruit whole. That doesn’t tell you how your own blood sugar will respond. If you wear a sensor, a 2025 trial found sensors ran about 16 mg/dL high after drinks and fruit compared with fingertip blood, so a finger stick tells you more about a smoothie. If you take insulin or a sulfonylurea, your care team sets your carbs. glucose.guide covers meals and sensors.

For kids

The 2025 to 2030 US guideline says to avoid added sugars from birth to age 4, and that “No amount of added sugars is recommended” for children 5 to 10. A kid’s glass, then, has no honey or syrup, and we’d leave out juice and powder too. Consumer Reports’ experts say children are among the most vulnerable to lead.

Our kid’s glass is half a cup of milk, half a banana, half a cup of frozen strawberries and a cup of spinach. It’s 147 calories, with no added sugar, and the strawberries and banana hide the spinach. The guideline says full-fat dairy is important for children, so whole milk is a good swap. What should go in a kid’s smoothie? has more.

When pregnant

The guideline names iron, folate and iodine as top priorities in pregnancy, and folate-rich greens among the foods to eat. A cup of raw spinach has 58 mcg of folate, about 15% of the Daily Value. Get the protein from milk, Greek yogurt or cottage cheese, and leave the powder out, since Consumer Reports’ experts say pregnant people are among the most vulnerable to lead. The guideline also says to talk to your clinician about a prenatal vitamin.

Older adults

The guideline says some older adults need fewer calories but the same or more protein, vitamin B12, vitamin D and calcium. A glass built on milk and Greek yogurt covers a lot of that. In the strawberry banana yogurt glass, the milk and yogurt bring about 2.8 mcg of B12, more than the day’s Daily Value, about 510 mg of calcium, almost 40% of it, and 30 g of protein. protein.guide covers why protein needs rise with age.

Plant-based

Soy milk and tofu make a full glass with no dairy. Soy is the plant protein with the best record: in a 2025 review, soy matched milk for muscle across 17 trials. The plant glass is a cup of unsweetened soy milk, half a cup of firm tofu, a cup of frozen blueberries and a tablespoon of peanut butter, with 33 g of protein. The guideline says vegan diets often run short on B12, calcium and vitamin D. The unsweetened soy milk in USDA’s record is fortified, with 2.99 mcg of B12 and 299 mg of calcium a cup, but brands differ, so check your carton. Tofu labels vary a lot too.

On warfarin

Leafy greens are high in vitamin K, which can change how warfarin works. A cup of raw spinach has 145 mcg, 121% of the Daily Value. MedlinePlus lists spinach and kale among the foods you don’t have to avoid but should keep to small amounts, and at the least should “not change the amount of these foods and products you eat day-to-day or week-to-week.” The green glass has two cups of spinach, so talk to your provider before making it a habit, and if you do drink it, keep the amount the same every day.

With kidney disease

Your doctor sets your protein number, so skip the meal line here and use theirs. The quiz takes the protein line out when you tell it you have kidney disease.