The most valid way of testing for an allergy is by means of an elimination diet.

Food allergies or sensitivities can be difficult to establish and often involve an elimination diet, to pinpoint the problem food.

If you stick to your elimination diet and don't begin to feel better, you should discuss your low libido with a doctor.

One advantage is that chemicals can be tested for, whereas an elimination diet only sorts out foods.

I was given yet another elimination diet.