My husband bp was 170/100 after 1 week his bp is 150/100 . so what does it mean he is in dangerr. the bp will be ok by changing his lifestyle (eg reducing salt in food,daily excerise,proper sleep) or should start medicines?

If your husband is under the age of 35 then these high blood pressures levels should be investigated for secondary hypertension. He should see a doctor.

When were these blood pressures taken? You probably should get a home blood pressure monitor and check his blood pressure throughout the day and keep track of his readings to show his doctor, including what symptoms he has, if any, etc. Lifestyle changes are important but he needs to be under a doctor’s care to figure out what is causing his hypertension. Then, proper treatment can be rendered.