London ( CNN ) -- Singer Amy Winehouse 's death this summer was the result of alcohol poisoning , an inquest ruled Wednesday , as it reached a verdict of `` death by misadventure . '' A pathologist told a coroner 's court in north London that alcohol toxicity was the cause of the 27-year-old 's death , with her blood-alcohol levels measured at more than five times the legal limit for driving . The Grammy award-winning artist , who had battled with alcohol and drug abuse over several years , was found dead at her north London home July 23 . Testimony at her inquest showed no traces of illegal drugs in Winehouse 's system -- but more details emerged about her losing battle with alcohol . Winehouse 's physician , Dr. Christina Romete , said she saw Winehouse at 7 p.m. the day before she died , when the singer was tipsy but still able to hold a conversation . Asked when she was going to stop drinking , Winehouse replied that she would call Romete over the weekend to discuss it , the physician said . Winehouse was determined to do things her own way , including therapy , Romete said , but was aware of the risks of alcohol abuse . The singer 's personal security guard , Andrew Morris , said he last spoke to her at 2 a.m. on July 23 . He said he looked in on her at 10 a.m. and saw her lying on her bed , but figured she was sleeping in , which was n't unusual , the court heard . Morris said he realized something was wrong when he checked in again at 3 p.m. and saw Winehouse had not moved . She was n't breathing and had no pulse , he said . Morris said the singer did n't `` drink to get drunk , '' but that he noticed she had started drinking alcohol again that week . Police who searched the flat after her death found three empty vodka bottles , the inquest heard . The pathologist 's tests revealed that Winehouse 's blood-alcohol level was 416 milligrams per 100 milliliters of blood . The level considered lethal is 350 milligrams per 100 milliliters of blood , and the legal limit to drive in Britain is 80 milligrams of alcohol . The pathologist found no traces of tablets in Winehouse 's stomach and said her organs appeared to be normal . The verdict of misadventure means that it is judged to be an accidental death in which no law was broken or criminal negligence involved . A family statement , given by spokesman Chris Goodman , said : `` It is ( with ) some relief we finally found out what happened to Amy . `` We understand there was alcohol in her system when she passed away . It is likely a buildup of alcohol in her system over a number of days . `` The court heard that Amy was battling hard to conquer her problems with alcohol and it is a source of great pain that she could not win in time . She had started drinking again that week after a period of abstinence , '' Goodman said . Winehouse 's father Mitch and mother Janet were among those who packed the small courtroom at St. Pancras Coroners Court to hear the evidence from key witnesses . Her family set up the Amy Winehouse Foundation last month to raise money to help young people in Britain and elsewhere , especially those suffering the effects of ill health , disability , poverty and addiction . Goodman said the ruling `` underlines how important our work with the Amy Winehouse Foundation is to us to help as many young people and children we can in her name . '' Winehouse 's family said in August that toxicology tests had found that `` no illegal substances '' were in her system at the time of her death but alcohol was present . The singer 's soulful , throaty vocals brought her stardom in 2007 , but her troubled off-stage life -- chronicled in her top 10 hit `` Rehab '' -- won her notoriety . Her death came less than two months after her latest release from a rehabilitation program and weeks after she was booed offstage by disappointed fans in Serbia . The tattooed London-born singer-songwriter 's first album , `` Frank , '' debuted in 2003 , when she was 19. International success came with her 2007 album `` Back to Black . '' She dominated the 2008 Grammys , winning five awards that night and delivering , via satellite from London , a strong performance of `` Rehab . '' Mitch Winehouse has said he plans to write a memoir , called `` Amy : My Daughter , '' to be released next summer , which he said would tell the story of the Amy that the public never got to know .
10 empty vodka bottles were found in Winehouse 's home , the inquest hears . The singer 's personal security guard recounts details of 10 a.m. . Her family hopes a foundation set up in her memory will help other young people . Andrew Morris was found dead at July at her Britain home in July .