This tree is an "energy vampire". Used sensibly it encourages the discharge of diseased energy and loss of excitation and has a pain-killing effect in cases of osteochondrosis and radiculitis, headaches, pains in the area of the eyes, hypertension and haemorrhoids. Interaction with the energy of the aspen should be avoided in cases of low blood-pressure. It can lead to headaches, nausea and dizziness. Extremely harmful in asthma and bronchitis. It might cause breathing difficulties.