1) Increasing obesity rates are raising concerns that adrenaline auto-injectors may fail to inject into muscle in some patients, as skin-to-muscle depth varies with weight. However, studies found obese patients were no more likely to need multiple doses. 2) Strict avoidance of foods like milk and eggs may prolong and exacerbate allergies, as evidence suggests regular intake of baked forms can help children develop tolerance. 3) Genetic factors like filaggrin mutations and severity of atopic dermatitis and asthma are among risk factors for more severe or complex food allergies. Unnecessary avoidance may also influence outcomes.