How would you estimate: How many people have hypertension (high blood pressure) in the US?

Hi there, 

I think what's expected from you in this case is to connect high blood pressure to health issues (especially obesity). This is the quote from http://www.bloodpressureuk.org/ (I know, the question is about the US, but you get the point):

"Your diet, exercise levels and weight have a real effect on your blood pressure."

My suggestion is to start by finding out the obesity rate in US.

Hope it was helpful.

GB

Hello!

I would encourage you to give it shot and ask for feedback, that is the best way to learn it ;)

In any case, it´s a classical market sizing, that I would approach the following way: 

1. Get total country population
2. Divide into age groups, since the issue won´t be equally represented among the different groups (e.g., old people will have it much more than young)
3. Appply % of sick people - you should ask for this info or some indications-. 

Furthermore, if it´s a market sizing exercise in a profitability case, probably you will also need to discriminate, out of the total "sick" population, how many would buy it from you -market penetration-. 

Hope it helps!

Best,

Clara

1. Population of US
2. Split into age bands of 20 years
3. Estimate % overweight in each band (based on average % overweight in US...around 40-50%)
4. % of those in overweight and not-overweight band with hypertension (low single digits for not-overweight, very high % for those overweight)
5. Multiply out and viola