Young women today believe they have more job opportunities and a better chance of balancing parenting and a career than their mothers had at the same age, but then, for many, the picture becomes very much bleaker. A third do not believe there will ever be equal pay; a fifth say they have less respect and status in society than their mothers did; almost a third say they are less happy; and two thirds believe they are more prone to eating disorders and mental illness.

The information comes from a poll of more than 1,000 young women aged 16 to 30, which is part of a year-long review conducted in England and Wales, the results of which will be published tomorrow. The poll also reveals that 40% of young women are often lonely; 46% don't know whom they can trust; 36% said "they often felt that they could not cope with their lives"; and one in four said that they felt they had nobody to whom they could turn when they were unable to sort out their problems by themselves.

The review also included a poll of the public conducted last week and the results of 10 focus groups by the charity formerly known as the Young Women's Christian Association England and Wales (YWCA) and currently named Platform 51. On Wednesday it relaunches again as Young Women's Trust (YWT). Deborah Mattinson, chair of trustees of YWT, said: "What we know from our year-long investigation is that there are over a million young women living with disadvantage in a system that offers them too few second chances. When the YWCA began its work 150 years ago, this was the group on which it focused. The new organisation is returning to that cause."

The YWT research looked at qualifications, jobs, housing, health, family ties and outlook. While more than 58% of young women appear secure and in work, 42% are struggling with issues that include a lack of qualifications, difficult relationships with partners and family, debt, poverty, housing and depression. Five per cent of young women with degrees also suffer from depression and isolation.

"In popular culture, young women are stereotyped as a story of two halves," said Carole Easton, YWT's chief executive. "Either it's about bad behaviour, having babies and benefits. Or they are portrayed as successful, salaried and sorted. The real story is quite different. Young Women's Trust wants to challenge the stereotypes and change outcomes."

Tammie Wingrove, 23, is resilient and articulate, despite the difficulties she faces. She is eight months' pregnant and lives on £56 a week Jobseeker's Allowance. Her mother died when she was seven, her father died when she was 13. A year later her stepmother threw her out. She went into care and was moved 15 times. She was diagnosed with dyslexia at 17. "Before that, teachers always said I was lazy," she said. She returned to one of her care homes in a work placement. "I know how to handle little rude boys," she said with a smile. "I know what it is to go to sleep with nothing and wake up with nothing."

Her aim is to do an access course, go to university and become a social worker. She has a partner, but as someone who has been in care she has her own flat. "I've learned from the past," she said. "I rely on no one except my sister and nan, who have never let me down in my life.

"I cried my eyes out when I knew I was pregnant," she added. "But now I'm fine. I will go to university next year if I can." Tammie is on the YWT advisory board. "I want to help other young women," she said. "I smile, but that doesn't mean I am happy."

The YWT's report challenges a prevailing myth that boys are having it bad, while girls have never had it so good. One in three girls – 100,000 a year – do not achieve five GCSEs A*-C, including English and maths. Half a million young women are Neets – not in employment, education or training. That is over 100,000 more than young men of the same age. The report says young women are often steered into stereotypical apprenticeships, such as childcare, hairdressing and beauty, which are low paid.Currently, while there are 10 applicants for every high skilled role, there are 45 applicants for vacancies in the low skill sector.

Nadine White, 23, has been unemployed for three years. "I had a decent upbringing, then my dad died when I was 13. I went downhill. I didn't behave at school. I fell out with my mum and she asked me to leave home at 17. We get on better now, but we can't live in the same house," she said.

Nadine has a Level 3 childcare qualification but can't get a job. She has lived in a hostel and sleeps on friends' sofas, and she sometimes stays with her grandmother. "It's clothes in plastic bags and kipping on floors," she said. She receives £56 a week JSA. "I've done lots of courses. I've volunteered. I don't want to sit on my backside but the longer you are out of work, the harder it is to persuade someone to give you a chance.I am isolated because if you go out, that's the price of food."

Nadine is also on the YWT advisory board. "I want a career not a job but I don't have the resources. Of course, it's depressing and frustrating and I can't see how it will end. I need the opportunity to show the potential I have but that doesn't happen by filling in an application online and never finding out why an employer has said no."