Smoking and BMI and other stuff came after I sold it. I used to have hardware models too - I forget who I partnered with. It never did earn any real $$.
I built another version of this about 30ish years ago, you can see it now at www.deathclock.com. I sold the site about 15 years ago (helped pay for an adoption). It was my first "successful" website, getting near 5 million views per day. It was also a useful programming exercise (learned the painful way that one ColdFusion function wouldn't support large numbers and others would, so had to do so wrangling to get the final number right).