A survey (Sloan and Powers 1986) of women’s opinion found that about 30% of the women polled felt that someone in their family had food sensitivity or food allergy.
But of these the most frequently encountered reaction (rash and/or diarrhea after being fed fruit juices) is likely to be non-allergic.
The prevalence allergy is greatest in the first few years of life and decreases over the first decade. For the total population between 1 and 2% of individuals are estimated to be allergy. Among older age groups, food sensitivities are likely to be considerably lower.
Definition and prevalence of food sensitivities