hypo = under, below, less

 lesslikely to cause allergies  less likely to cause allergies

 a disorder caused by a thyroid gland that is slower and less productive than normal

 an abnormally low level of sugar in the blood; a blood sugar level below what is needed for healthy blood

 the practice of being less than genuine; pretending to be someone you are not

 an idea under investigation

 a temperature below the normal body temperature; low body heat

 under the skin

 having blood pressure below what is normal

 under the tongue

 located below the ground