Milllennials are freaked out about their finances, but many feel they have nowhere to turn for money advice.

A survey released Wednesday by Fidelity found that roughly one in four (23%) millennials said they “trust no one” when it comes to advice about money — making it the second most common response to the question of who they most trust about money matters. (The most common response was that they trust their parents, which one out of three millennials said).

That trust-no-one mentality is worrisome, considering that about 4 in 10 millennials — defined as those born between 1980 and 1989 — say they worry about money at least once a week and nearly two in five say they worry about it “all the time.” Millennial women tend to worry a lot more than men: Nearly half say they worry about money at least once a week or more, compared to less than one in three men. And while nearly one in five millennial men says they never worry about money, just 2% of women can say the same thing.

Millennials on Money: 'Trust No One'

Lauren Brouhard, the senior vice president of retirement for personal investing at Fidelity Investments, says that part of the reason that many millennials — male and female — may not trust anyone for money advice is that many haven’t had money conversations with their parents. Or, for that matter, with anyone. “Money is still a very taboo subject, it’s hard to talk about,” she says.

Indeed, the survey finds that roughly half of millennials say they haven’t ever gotten any financial advice from their parents, and more than two in three have never had a detailed conversation with their parents about important financial issues like estate planning, health and elder care, and covering living expenses in retirement.

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But clearly, millennials are in need of some solid money advice. The average student who borrows to pay for college now comes out with a bill of nearly $30,000 — which if they don’t pay it off promptly, could end up costing them nearly double that. Plus, millennials aren’t saving enough for retirement: More than four in 10 workers ages 25 to 34 have saved less than $1,000 for retirement — far lower than the amount experts recommend.

For parents, this should be a wakeup call to start a conversation with their kids about money. Charlie Bolognino, owner of Side-by-Side Financial Planning, says that parents should try to teach millennials about both smart saving and spending. This could mean everything from budgeting to retirement and other savings to paying down debts. Parents should try to be both encouraging and approachable, he says. “It’s OK for a parent to admit their own mistakes with money over the years,” he adds. “Talk about what you learned from those experiences.”