yes, vastu affects our health. If you notice that the quantum of medicines being used in your family is extraordinarily high, check if there is any major VASTU defect in your house. If a South facing house is built against Vastu & they are unable to welcome the cosmic energies and blessings from Surya Devta at the break of day, two major Vastu effects are felt i.e. 1) continuous intake of medicines and 2) sudden attacks on monetary targets. This may be due to disbalances of various energies we receive from sun rays and improper quantity of ultraviolet & infrared rays in a house.