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Nutrition.gov
U.S. Department of Agriculture

Food Allergies and Intolerances

Learn about food allergies and sensitivities, as well as celiac disease and lactose intolerance.

  • Food Allergies

    Learn about major food allergens, signs and symptoms, and the FDA's role in food allergy labeling.

    • HHS, Food and Drug Administration

  • Food Allergies: What You Need to Know

    What are the main food allergens? What are the most common food allergy signs and symptoms? Find answers here.

    • HHS, Food and Drug Administration, Center for Food Safety and Applied Nutrition

  • Avoiding Food Allergy Reactions

    Learn more about food allergies, and sign up for allergy alerts.

    • Foodsafety.gov

  • Food Allergy

    Explore research being done to help better understand, prevent, and manage food allergies.

    • HHS, National Institutes of Health, National Institute of Allergy and Infectious Diseases

  • What People With Lactose Intolerance Need to Know About Osteoporosis

    Read about the link between lactose intolerance and osteoporosis.

    • HHS, National Institutes of Health, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Osteoporosis and Related Bone Diseases National Resource Center

  • Lactose Intolerance

    Find out the what, why, who, and how of lactose intolerance.

    • HHS, National Institutes of Health, National Institute of Diabetes and Digestive and Kidney Diseases

  • Food Allergy 101

    This issue covers the basics on food allergies, and provides resources for more information.

    • HHS, National Institutes of Health, MedlinePlus Magazine

  • Food Allergy

    Find information on food allergies, including diagnosis, diet changes, and more.

    • HHS, National Institutes of Health, National Library of Medicine, MedlinePlus

  • Gluten Sensitivity

    Discover what gluten sensitivity is and how it differs from celiac disease. 

    • HHS, National Institutes of Health, National Library of Medicine, MedlinePlus

  • Lactose Intolerance

    Find information on lactose intolerance and how diet changes can help.

    • HHS, National Institutes of Health, National Library of Medicine, MedlinePlus

  • Learn About Gluten-Free Diets

    When do you need a gluten-free diet? What foods contain gluten? Get the answers here.

    • HHS, National Institutes of Health, National Library of Medicine, MedlinePlus

  • Food Allergies and Sensitivities

    Learn about common food allergies and sensitivities, such as gluten and lactose intolerance.

    • HHS, Office on Women's Health

  • Gluten-Free Diets

    Learn why people may need to avoid gluten-containing foods and how to maintain a gluten-free diet.

    • PennState Extension