Best design for relating one record (e.g. a person) with many records (allergies) is to use a main form (person) subform (the many). You should have at least a table for persons, one for allergies and a junction table for persons/allergies. I suspect you're going to ask what a junction table is. Instead, do yourself a favour and research db normalization.
I don't know where you're located but a table field for sex/gender that can be only M or F seems quite archaic.
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.