The black-and-white nutrition labels found on packaged goods in grocery stores will soon change, but not substantially.

The U.S. Food and Drug Administration’s Nutrition Facts label is getting its first update in 20 years, with tweaks aimed at helping people better understand the foods they purchase.

To an untrained eye, the labels look similar. The two-column design remains, highlighting categories such as cholesterol and calories. What will change is the way we look at serving sizes, sugar and nutrients.

Serving sizes will better reflect the amounts of food people actually eat. For example, the current serving size on a bag of potato chips may be only a dozen chips. But since you could eat the entire bag in one serving, the new food labels will reflect the nutritional value of eating all of the chips.

A new category, “added sugar,” may have the biggest impact on our diets. Health advocates urge everyone to cut down on sugar, but it’s a common ingredient in many packaged foods. Companies are now required to list the amount of sugar added during the manufacturing process. This change will help consumers identify sugar that occurs naturally, such as in fruit, versus added sugar. By raising awareness of added sugar, the hope is consumption will drop.

The new labels showcase vitamin D and potassium, two nutrients many people don’t get enough of in their diet. Calcium and iron will also be listed, but companies won’t be required to list vitamins A and C because most people are not deficient.

These changes will make food labels easier to understand so everyone can make informed choices at the grocery store.