Missing mother Nicola Bulley had "significant issues with alcohol" and had been the subject of a welfare check before her disappearance, UK police have revealed.
The 45-year-old mortgage broker disappeared while walking her dog along the River Wyre in Lancashire after dropping her daughters at school on the morning of January 27.
Police believe Bulley most likely fell into the water and drowned, but have emphasised they are not discounting other lines of inquiry.
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Officers gave a media conference on Wednesday to give more details about the investigation and to dispel misinformation circulating around the investigation.
They revealed Bulley had been considered a high-risk missing person as soon as she disappeared, with police and health professionals having been called her home over a concern for her welfare on January 10.
Police said Bulley "had in the past suffered with some significant issues with alcohol, which were brought on by her ongoing struggles with the menopause, and that these struggles had resurfaced over recent months".
Police said they were sharing more detail than they usually would about Bulley's life to try to dispel any misinterpretation or further speculation about the case.
Officers said significant rumours and misinformation had been circulating due to the media and the public's huge interest in the mother's disappearance.
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They made it clear there were not any suspects involved in the investigation.
"There is not a single piece of evidence to suggest that there is any third party involved in this investigation," Detective Superintendent Rebecca Smith said.
Lancashire Police have searched the River Wyre and surrounds but have found no trace of Bulley beyond her phone, which was connected to a Teams work call, and a dog leash.
Bulley's partner, Paul Ansell, has said he is completely convinced Bulley did not fall into the river.
Police are continuing to search the river system and have expanded the search to the sea.
They have previously said the fast moving tide in the river makes it extremely difficult to search.
Meanwhile, nearly 40 detectives have since sifted through hundreds of hours of CCTV, dashcam footage and tip-offs from the public since the investigation began.
Thousands of people have contacted police with information allegedly about the mother's disappearance, leading Lancashire Police to investigate an "unprecedented" number of lines of inquiry.
Det Supt Smith said the force had also been "inundated with false information, accusations and rumours" across the past weeks.
She said in her 29 years of police service she had not seen "anything like it" and described "persistent myths" about the case.
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