Gluten-Free Diet: All Guides

Gluten-Free Diet: General Information

Gluten FreeYou may have heard about the gluten free diet on TV or read about it in a magazine or online. Despite what some people may think, the gluten–free diet is not another weight loss diet. The gluten–free diet is recommended by a health care provider for people who have been diagnosed with celiac disease, an autoimmune disorder that’s triggered by gluten, or with non-celiac gluten sensitivity. In these cases, a gluten–free diet must be followed to heal the body. Following a gluten–free diet can seem overwhelming at first, but it’s really not as hard as it might seem. Once you lean which foods to avoid and which foods you can eat comfortably, you’ll feel much better.

What is Gluten?

Gluten is a protein complex found in the grains wheat, barley and rye. Flours made from these grains are commonly used to make foods such as breads, cereals, pasta, pizza, and baked goods. The gluten in these foods gives them the elastic texture and it helps provides the structure of the food.

Why would someone need to follow a gluten–free diet?

Anyone with celiac disease should follow a gluten–free diet. If your health care provider tells you that you have gluten sensitivity you should also follow a gluten-free diet.

What is Celiac Disease?

Celiac disease is an autoimmune disorder that is triggered when gluten–containing foods are eaten. An autoimmune disorder is one in which the body’s immune system attacks an organ. When a person with celiac disease eats a food with gluten in it, the immune system launches an attack against the small intestine which damages the lining of the intestine. Noticeable symptoms of celiac disease are diarrhea, abdominal (stomach) pain, unintentional weight loss, anemia, poor appetite, irregular periods, delayed growth, and delayed onset of puberty. Some teens will have almost no noticeable symptoms, but their health care provider may detect a nutritional deficiency (such as low vitamin D levels) or low bone mineral density.

Image of A. In a healthy person, nutrients get absorbed by villi in the small intestine and go into the bloodstream., B. In a person with Celiac Disease, the villi have been damaged by inflammation, so fewer nutrients pass into the bloodstream.

Gluten is harmful for someone with celiac disease. Following a gluten–free diet heals your small intestine, and usually causes your symptoms of celiac disease to go away. Following a gluten-free diet may require a lot of work at first, but after a short time, it will seem more automatic. Instead of feeling limited, you will see that there are tons of delicious (gluten-free) options for you!

What is gluten sensitivity?

Gluten sensitivity, also called non-celiac gluten sensitivity or gluten intolerance, can be diagnosed if a person doesn’t have celiac disease or a wheat allergy (both of these tests are negative) but they have some similar symptoms and they feel better when they are on a gluten-free diet. While someone with gluten sensitivity will have similar symptoms as a person with celiac disease, they do not have the same intestinal damage. It’s unclear whether people with gluten sensitivity need to be as strict adhering to a gluten-free diet. There is no definitive test for gluten intolerance.

I feel better when I don’t eat gluten – do I need an official diagnosis from my healthy care provider?

If you think that you might have celiac disease, an allergy to wheat, or gluten intolerance, you should consult with a medical professional rather than simply starting to avoid gluten. Your health care provider will likely want to run some tests while you are still eating gluten in order to give you the best medical care.

Things to keep in mind…

A gluten-free diet isn’t always a healthy diet. Some people who follow a gluten-free diet may not get enough of certain nutrients, vitamins, and minerals in their diet such as fiber, iron, and calcium. Also, some gluten-free products can be high in calories and sugar. If you are diagnosed with celiac disease, it’s best to meet with a nutritionist to develop a healthy, balanced meal plan and to identify if any vitamin or mineral supplements are necessary. It is not suggested that people follow a gluten-free diet if not medically necessary.

There are many hidden sources of gluten both in food and non-food products. Gluten could be in foods that you wouldn’t expect–such as candy, sauces, soups, and marinades. Be sure to check products such as toothpaste, mouthwash, lipstick/gloss, glues, supplements, vitamins, and both prescription and over the counter medications. These potential sources of gluten are frequently overlooked.

  • Medications: Both prescription and over-the-counter medications may contain gluten. For over-the-counter medications, check with your pharmacist. With prescription medications, ask your health care provider to write, “Medication must be gluten-free” on any prescriptions.”
  • Soaps, Shampoos, and Lotions: Many of these products contain wheat or oats. While gluten cannot be absorbed through the skin, it is important to be aware of this – especially if you have a habit of biting your finger nails or touching food after putting on lotion.
  • Envelopes: Envelopes may have a gluten-containing adhesive. You should use self-adhesive envelopes or use a sponge to wet the adhesive kind.

What does a typical day on the gluten–free diet look like?


  • Scrambled eggs with cheese
  • Gluten-free toast with butter
  • Apple


  • 100% beef tacos with shredded cheese, lettuce, and salsa on gluten-free corn tortillas
  • Plain yogurt with added nuts and dried fruit or gluten free granola
  • Grapes
  • Milk

After-school Snack

  • String cheese
  • Microwave popcorn
  • Water


  • Grilled chicken with a baked sweet potato
  • Oven-roasted broccoli with garlic and olive oil
  • Mixed green salad with oil and vinegar dressing
  • Milk


  • Sorbet or gluten-free cookie

If you have family members who don’t follow a gluten-free diet, take the following steps to prevent gluten cross-contamination:

  • Keep gluten-free products in a separate cabinet
  • Store gluten-free foods in airtight containers
  • Store gluten-free flours and baking mixes in airtight containers in the freezer
  • Buy separate butter, peanut butter, cream cheese, and other spreads (to prevent contamination with wheat bread crumbs)
  • Use separate colanders, sponges, strainers, toaster, toaster oven, bread machines, towels, dish rags, and wooden utensils for gluten-free cooking
  • Clean counter tops, cutting boards, measuring cups and spoons, the microwave, pot holders, and baking pans well and often
  • Wash all shared utensils before and after each use

Where can I find gluten–free recipes?

The best resources for gluten-free recipes are the internet and gluten–free cookbooks. The GI department at Children’s Hospital Boston is a wonderful resource for families, and has great recipes as well as cookbook suggestions.

Should I take a vitamin or supplement?

Talk with your health care provider or nutritionist about vitamin and mineral supplements. Some people who follow a gluten-free diet may not get enough of certain nutrients, vitamins, and minerals in their diet such as fiber, iron, and calcium. It’s important to meet with a nutritionist to develop a healthy, balanced diet and to find out if you need to take any vitamin or mineral supplements.

The following gluten–free recipes are from the Center for Young Women’s Health “Quick and Easy Recipes for Teens” cookbook:

Banana Nut Smoothie Eggplant Marinara Avocado Salad Frozen Fruit Squares


Remember, no amount of gluten is “safe.” If your health care provider or nutritionist has told you to follow a gluten-free diet to treat celiac disease or gluten intolerance, it’s important to keep completely gluten-free. This will prevent the immune reaction that gluten causes, and will allow your small intestine to heal and stay healthy. Even a little bit of gluten can harm your intestine and cause an upset stomach.

Other Resources:

Boston Children’s Hospital Celiac Disease Support Group. Click here for more info


Gluten Free Diet: Foods to Avoid vs. Safe Foods

Gluten FreeWhat foods do I avoid on the gluten–free diet?

Following a gluten–free diet means you should remove all foods that have gluten from your diet. Foods that contain gluten should never be eaten by anyone with celiac disease.

Ways to eliminate gluten-containing food from your diet:

  • Remove grains that contain gluten from your diet.You shouldn’t eat any food that contains wheat, barley, or rye. Keep in mind that wheat has many forms. Avoid products that include bulgur, durum, graham, kamut, spelt, and semolina. These are all forms of wheat!
  • Avoid all gluten-containing foodssuch as bagels, breads, cakes, candy, cereals, crackers, cookies, dressing, flour tortillas, gravy, ice cream cones, licorice, malts, rolls, pretzels, pasta, pizza, pancakes, sauces, stuffing, soy sauce, veggie burgers, vegetarian bacon/vegetarian chicken patties (many vegetarian meat substitute products contain gluten) and waffles. Please note this is NOT a complete list. Fortunately, gluten-free varieties are available for most of these foods.
  • Look for “hidden” sources of gluten.Avoid foods that list gluten-containing ingredients such as ale, barley, beer, bleached flour, bran, bread flour, brewer’s yeast, brown flour, brown rice syrup (unless the food is labeled gluten free), bulgur, couscous, dextrin (unless the source is gluten-free), durum, farina, farro, hydrolyzed vegetable (wheat) protein, gluten flour, graham flour, granary flour, groats, harina, kamut, malt, malt extract, malt syrup, malt vinegar, matzo, modified starch (unless the source is gluten-free), rye, orzo, seitan, semolina, self-rising flour, spelt, smoke flavoring, soy sauce, triticale, wheat germ, wheat and white flour, whole meal flour, and vegetable gum.

What’s important to know about barley?

Barley contains gluten and is frequently used to make malt. As a general rule you should avoid natural or malt flavorings. If a food has “natural” or “malt” flavorings listed on the ingredient list, contact the company to see if these flavorings came from a non–gluten source.

Do I need to avoid oats?

Oats may contain gluten because they’re often processed in the same factories as wheat. It’s best to check with your health care provider to see if you can eat traditional oats or if you need to look for certified gluten-free oats. To find out if your favorite brand of oatmeal is gluten-free, check the package each time you purchase them. You can also call the company or check the brand’s website. Some brands, such as Bob’s Redmill, Glutenfreeda, and GF Harvest make oatmeal that is certified gluten-free. When eating out or when in doubt, avoid oats and oat-containing cereals and breads.

What foods are safe to enjoy on the gluten–free diet?

There are lots of delicious foods to enjoy! Many foods are naturally gluten-free, including milk, butter, cheese, fruits and vegetables, fresh meats, fish, poultry, eggs, beans, nuts, seeds, corn, quinoa, and rice. While most breads, pastas, cereals, and baked goods are made with grains and flours containing gluten, there are many grains and flours that are naturally gluten-free – and many products on the market made from these grains and flours. Think of these grains, and products made with them, as safe foods – in other words, safe to eat on the gluten-free diet!

Gluten-free grains

How can I tell if a food is gluten–free?

Certified Gluten-Free Label

A product labeled “gluten-free,” “no gluten,” or “without gluten” is the fastest and easiest way to spot a gluten–free product. Manufactures can add this label if they comply with the FDA rule of “gluten–free”.

Another way to tell if a product contains gluten is to read the allergen statement on packaged foods. The FDA food allergen labeling law requires food companies to label all foods that have wheat or contain wheat products. The allergen statement is found at the end of the ingredient list on packaged foods; if it says “contains wheat”, this means it has gluten and it’s unsafe.

The food labeling law does NOT apply to barley, rye, or oats. This means if the allergen statement does not include wheat, you need to continue reading through the ingredient list for the other sources of gluten described above. If you don’t see any of those words in the ingredient list, then the food is most likely a safe food.

In the sample ingredient label below, the ingredients are circled in red and the allergen statement is circled in blue. This food, which contains whole grain wheat, is not safe .

image of an ingredients label, highlighting the ingredients list and allergy statement

gluten-freeThere is also a symbol that may appear on packaging of gluten-free foods, which the Gluten Intolerance Group has deemed “Certified Gluten Free.” This symbol represents that the food manufacturer has applied for and been granted certification of the product’s status of gluten-free, by submitting test results showing that there is no gluten contained in the product.

You might notice that some food labels have the following statements and are unsure whether or not you should eat them. When in doubt, ask your dietitian or medical provider, but in general:

  • “May contain traces of wheat” – AVOID
  • “Made on shared equipment with wheat ingredients” – AVOID
  • “Manufactured in a facility that also processes wheat ingredients” – OK

How can I still eat my favorite foods?

Eating and baking gluten–free has become much easier than in the past as more companies now make gluten–free foods. You can now buy gluten–free breads, rolls, pizza–crusts, buns, bagels, donuts, cookies, muffins, pretzels, cereals, and desserts. The following brands have a great selection of gluten–free foods which you can buy directly from their websites or at many grocery stores:

Here are some brands that carry gluten-free products

Gluten-Free Diet: Eating at Home vs. Away

Gluten FreeHow do I shop for gluten–free foods at the grocery store?

Many grocery chains carry gluten-free brands. These products are commonly found in the aisles that contain natural and organic foods or they may even have their own section, labeled “gluten-free foods.” It’s also important to remember that most of the fresh foods found along the perimeter of the store (outside aisles) including fruits, vegetables, meat, poultry, fish, and dairy are naturally gluten-free. Rice, beans, peanut butter, nuts, cooking oils, and corn and rice cereals are also typically gluten-free.

Watch for possible gluten cross-contamination. This means foods that have gluten in them come in contact with gluten-free foods. Be aware of gluten cross-contamination at delis, buffets, and salad bars.

Gluten–Free Grocery Lists:


  • Milk
  • Cheese
  • Plain Yogurt


  • Plain fresh or frozen fruit (without any added ingredients)


  • Plain fresh or frozen vegetables (without any added sauces or breaded toppings)


  • Brown Rice
  • Gluten-free Cereal/Oatmeal
  • Quinoa flakes (very similar to oatmeal)
  • Gluten-free Bread
  • Gluten-free Waffles
  • Quinoa
  • Rice/Corn/Quinoa pasta
  • Black bean/lentil/chickpea pasta
  • Corn
  • Millet
  • Sorghum
  • Amaranth
  • Buckwheat


  • Gluten-free frozen entrees, soups/chili
  • Gluten-free frozen Chicken Nuggets
  • Beans: black beans, chickpeas, northern beans
  • Gluten-free Luncheon Meats
  • Canned Tuna
  • Ground 100% Beef
  • Fresh or frozen poultry
  • Plain tofu
  • Whole fresh eggs
  • Gluten-free veggie burgers

Snacks and Desserts

  • Gluten-free snack bars
  • Corn tortilla or potato chips
  • Gluten-free crackers
  • Nuts: Plain almonds, walnuts, soy nuts
  • Popcorn

Condiments and Seasonings

  • Salsa
  • Peanut Butter (Note: reduced–fat may contain gluten)
  • Jelly
  • Ketchup
  • Maple Syrup
  • Hummus
  • Tzatziki
  • Guacamole

How can I stay gluten–free while eating away from home?

The best way to stay gluten-free when away from home is by planning meals and snacks ahead of time. That may sound hard, but following these tips can make it easier:

  • Eat breakfast at home or pack a gluten–free breakfast to eat at school or on–the–go.
  • Work with your parents, nutritionist, or school nurse to find gluten–free foods on the school breakfast and lunch menus.
  • Pack your lunch in an insulated bag to eat at school or on–the–go.
  • Keep gluten–free snacks such as fruit, cheese sticks, trail mix, snack bars, crackers or nuts in your backpack for times when you need a quick snack.

Gluten-Free Restaurant Label

Eating at a restaurant

If you’re planning on eating at a restaurant, go to one that has a gluten-free menu or talk with the restaurant manager to find gluten-free menu items before ordering. Remember to tell the manager or chef that both the meal AND its preparation must be gluten-free. More and more restaurants are becoming gluten-free friendly and making it known on the menu. However, because “gluten-free” in some instances is seen as a trend rather than a medical necessity, it is important to tell the server or manager your level of sensitivity rather than just ordering something labeled gluten-free.

Some restaurants are easily able to make modifications to meals even if they do not have a separate gluten-free menu. When in doubt, always ask, even if the meal appears to be gluten free on the menu; usually not all ingredients are listed on the menu.

Hidden sources of cross-contamination at restaurants include using the same pans and utensils to bake gluten-free bread, using the water from boiling pasta to steam vegetables, and adding bread or flour to thicken soups.