=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
Cache-Control: public,max-age=300
Content-Length: 61796
Content-Type: text/html
Server: Microsoft-IIS/7.5
X-Powered-By: ASP.NET
X-UA-Compatible: IE=edge
Access-Control-Allow-Origin: *
Date: Sun, 23 Sep 2018 15:49:24 GMT
Connection: close
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload

Request headers
================
HEAD /tobacco/data_statistics/fact_sheets/health_effects/effects_cig_smoking/index.htm HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: www.cdc.gov
Accept: */*
Referer: http://sothisisfitness.com
Connection: close


Link is valid.