Complementary feeding and food allergy, atopic dermatitis/eczema, asthma and allergic rhinitis
This is a systematic review conducted for the USDA and the Department of Health and Human Services Pregnancy and Birth. The intention of the study is to find out to questions:
What is the relationship between the timing of the introduction of complementary foods and beverages (CFBs), or types and amounts of CFBs consumed, and the development of food allergy, atopic dermatitis/eczema, asthma, and allergic rhinitis?
The conclusion was moderate evidence suggests that there is no relationship between the age at which complementary feeding first begins and risk of developing food allergy, atopic dermatitis/eczema, or childhood asthma.
Limited to strong evidence, depending on the specific food, suggests that introducing allergenic foods in the first year of life (after 4 mo) does not increase the risk of food allergy and atopic dermatitis/eczema but may prevent peanut and egg allergy. There is not enough evidence to determine a relationship between diet diversity or dietary patterns and atopic disease.
For those in Singapore, our doctors (many of whom you would recognize the names such as my co-author Prof Hugo, Prof Thiam, Prof Chan, Dr Lynette Shek) had conducted a study published in March 2018 which aimed to see if early introduction would work for Asian population. The conclusion was food allergy rates in Singapore are low despite delayed introduction of allergenic foods. Early introduction of allergenic foods may thus not be necessary in populations in which overall food allergy prevalence is low, and thus infant feeding recommendations should be carefully tailored to individual populations.
Please check with your doctor first before introducing peanuts and to give the heads-up that this is what you're going to be doing. If possible, you may want to have your child allergy-tested first so that you have a sense of what allergic reaction you have to be ready to deal with.
Some books that you may find interesting:
Allergy Free and Easy Cooking 30-Minute Meals without Gluten, Wheat, Dairy, Eggs, Soy, Peanuts, Tree Nuts, Fish, Shellfish, and Sesame