You don’t need a food scale at every meal

Have you ever looked at a plate and wondered whether it contains “too much,” while also knowing that weighing every grain of rice is not how you want to spend your life?

Portion advice can make diabetes feel like a maths exam that never ends. Exact measurements may be useful in some situations, but most people need an approach that works when they are tired, busy, eating away from home, or sharing a family meal. The aim is not to guess perfectly. It is to use a simple, repeatable reference so you can notice what generally works for you.

Portions matter because the amount of carbohydrate in a meal can affect how much blood glucose rises afterward. Carbohydrate foods include rice, bread, potatoes, pasta, oats, beans, fruit, milk, and yoghurt. This does not mean these foods are “bad,” or that everyone needs the same amount. It simply means that having a rough sense of quantity can make your readings easier to understand.

Your own hand can be a convenient starting point. A cupped handful can represent a portion of cooked rice, pasta, oats, or another grain. A fist can help you picture the size of a potato or piece of fruit. A palm-sized amount can be used as a rough reference for foods such as eggs, fish, chicken, meat, tofu, or beans, while one or two fists can help estimate vegetables.

These are not medical rules, and hands vary in size. That is actually part of their usefulness: your hand is always with you, and you are comparing meals using the same personal reference. The goal is consistency, not converting your palm into an exact number of grams.

Your usual dishes can help too. If you often eat from the same bowl, notice how a cupped handful of cooked rice or potatoes looks inside it. You might find that it reaches one-third of the bowl or sits level with a particular mark. The same applies to a spoon, cup, or plate you regularly use. After a few meals, you can recognize that amount without weighing it again.

For a simple meal, you might picture plenty of non-starchy vegetables, a palm-sized protein food, and a cupped-hand portion of rice, bread, potatoes, or another carbohydrate. If vegetables are unavailable, expensive, or not part of that particular meal, the method still works: use your familiar reference for the carbohydrate portion rather than deciding the meal has “failed.”

Mixed dishes can feel harder because everything is combined. Instead of trying to separate every ingredient in a stew, soup, curry, or rice dish, start by serving it in the same bowl or with the same spoon you normally use. That gives you a repeatable baseline. You can then compare similar meals rather than attempting impossible precision.

One reading after one meal is not a verdict on your portion. Blood glucose can also be affected by medication timing, activity, stress, illness, sleep, and the meal’s combination of foods. Look for a repeated pattern: does a similar portion of the same food often leave you above the target agreed with your healthcare team?

If so, make one small experiment, such as serving slightly less of the carbohydrate food while keeping the rest of the meal satisfying. If readings are repeatedly high or low, discuss the pattern with your healthcare team rather than making medication changes yourself. People who calculate insulin from carbohydrate amounts should continue using the method taught by their diabetes team, as rough hand estimates may not provide enough precision.

You do not need to measure everything forever. This week, choose one carbohydrate food you eat regularly and compare its usual portion with your cupped hand, fist, bowl, or spoon. Remember the picture. A familiar estimate you can repeat is often more helpful than a perfect measurement you cannot maintain.

Until next week,
Michael

PS: Cocoa is being built to help make everyday food decisions like this feel less complicated—including understanding portions without turning every meal into a weighing session. If you’d like to test what we’re building and share what would genuinely help you, reply to this email. Testing spots are limited while we work closely with each tester.