expert type icon EXPERT

Mr. Steven B. Machtinger, MD

Allergist and Immunologist

Dr. Steven Machtinger practices Allergy and Immunology care in San Mateo, CA. Dr. Machtinger specializes in the diagnosis and treatment of asthma and other allergic diseases. Allergist-Immunologists are trained and certified to treat each patients sensitivity and response to allergens of varying severity. Dr. Machtinger provides several means of testing and treatment to increase immunity to potentially harmful substances.

Dr. Machtinger graduated from the University of Pittsburgh School of Medicine. He completed residency training in Pediatrics and fellowship training in Allergy and Immunology at Stanford. He is board-certified by the American Boards of Pediatrics and of Allergy, Asthma, and Immunology. He is a fellow of the American Academy of Allergy, Asthma, and Immunology and the American College of Allergy, Asthma, and Immunology. He is the current president of the Allergy, Asthma and Immunology Foundation of Northern California. An adjunct clinical associate professor of Pediatrics at Stanford, he is a recipient of the Volunteer Clinical Faculty Award from the American Academy of Allergy, Asthma, and Immunology. Dr. Machtinger has contributed research articles to peer-reviewed journals and review chapters to allergy textbooks. He is a frequent lecturer to medical professionals and interested lay groups.
41 years Experience
Mr. Steven B. Machtinger, MD
Specializes in:
  • Food Allergy
  • Allergy Skin Tests
  • Allergies
  • Asthma
  • Eczema
  • Drug Allergies
  • Anaphylaxis
  • San Mateo, CA
  • Univ of Pittsburgh Sch of Med, Pittsburgh Pa
  • Accepting new patients

Why am I allergic to just soy milk and no other soy product?

That's a tough question to answer. Since you tolerate soybeans you may not be allergic to soy protein. Most people allergic to soy protein can tolerate some soy products. Soy sauce READ MORE
That's a tough question to answer. Since you tolerate soybeans you may not be allergic to soy protein. Most people allergic to soy protein can tolerate some soy products. Soy sauce is made by fermenting soy beans and this appears to render the allergens inactive for most soy-allergic individuals. Soy lecithin is a fat and contains no soy allergen (unless as a contaminant) so that too is typically tolerated by soy-allergic persons. Soy "milk" is not a true milk and often contains other ingredients to make the beverage more milk-like in consistency, smoothness, pour-ability and taste. Some of these ingredients may be vegetable gums or natural flavors. You might be allergic to these extra ingredients rather than to soy. You should be able to resolve this problem with the assistance of a board-certified allergist. Alternatively you could try other brands of soy milk to see if this problem occurs with all or most of them or with just one brand.


Steve Machtinger, MD FAAAAI