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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

    Discover the most common food allergy signs and symptoms.

    • 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

  • Bone Health and Osteoporosis

    Explore different resources on bone health and osteoporosis to learn what can be done to keep bones healthy and strong, to reduce the risk of osteoporosis, and how to manage bone health after receiving a diagnosis for 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

    Get information on the basics of food allergies.

    • 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

    Discover who needs a gluten-free diet, and what foods contain gluten.

    • 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