Historically, studies have equated forgetfulness with old age. Indeed, when someone misplaces something like their car keys, people generally refer to it as a "senior moment." But a new survey tells a different story.

A Trending Machine national poll finds that millennials aged 18 to 34 are, in fact, much more likely than those 55 or older to forget what day it is (15 percent vs. seven percent), where they put their keys (14 percent vs. eight percent), forget to bring their lunch (nine percent vs. three percent) or even to take a bath or shower (six percent vs. two percent).

Generally speaking, two-fifths -- or 39 percent -- of Americans have forgotten or misplaced at least one everyday item in the past week. The only thing those 55 and older are significantly more likely to forget? Names (23 percent vs. 16 percent).

So what's behind the phenomenon?

Patricia Gutentag, a family and occupational therapist, pointed the finger at stress in a statement released by The Trending Machine.

"Stress often leads to forgetfulness, depression and poor judgment," she said. “We find higher rates of ADHD diagnoses in young adults. This is a population that has grown up multitasking using technology, often compounded by lack of sleep, all of which results in high levels of forgetfulness.”

When it comes to gender, The Trending Machine found that women are more likely to forget or misplace everyday items compared with men, (43 percent vs. 31 percent). The reason? The stress of work-life balance issues coupled with increased financial responsibilities have taken a toll.

In addition, regional stress differences can be inferred from the higher level of forgetfulness found in the Northeast compared to those reported in the more relaxed West (51 percent vs. 39 percent).

Despite these findings, memory loss remains a common complaint among the elderly. And ageist stereotypes don't seem to help. One recent study found that simply telling older people they are forgetful makes their memory worse.

What do you think? Are millennials more forgetful than seniors? Let us know your thoughts in the comments.

Earlier on HuffPost50:

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  • Make Your Meals A Rainbow

    That doesn't mean you should pour out a bag of Skittles at each meal. Try to eat foods of a variety of natural colors to gain antioxidants, said Dr. Amen.

  • Avoid These Fruits

    Just because something is a fruit, doesn't mean you should chow down on it, according to Dr. Daniel Amen, author of "Use Your Brain To Change Your Age." For brain health, Dr. Amen recommends food with a low glycemic index -- which measures how quickly food increases blood sugar -- and a lot of fiber, which benefits your intestinal tract. Certain fruit like pineapple and watermelon have high glycemic indexes and should be avoided, advises Dr. Amen. Instead, incorporate fruits like blueberries, apples, oranges, cherries, kiwi, strawberries and raspberries. When it comes to fiber, consider adding coconut to your diet. <em>Correction: In a previous version of this slide, "blood pressure" was incorrectly inserted where "blood sugar" is.</em>

  • You Need Fat

    Don't eliminate all of the fat in your diet. Instead, focus on incorporating good fats. In fact, if your cholesterol drops too low, you may be at greater risk for depression, according to Amen <a href="http://www.psychologytoday.com/blog/the-breakthrough-depression-solution/201106/low-cholesterol-and-its-psychological-effects" target="_hplink"> and several studies on low cholesterol</a>. So what exactly are "good fats"? Dr. Amen advises people to eat foods rich in omega-3s to promote brain health, including almonds, walnuts, brazil nuts, fish, lamb, avocados and green leafy vegetables. Another added benefit of eating good fats? "Your vitamins are actually absorbed better when you eat them with a little bit of fat," said Dr. Amen.

  • Choose Your Meat Wisely

    While you generally want to avoid bad fats, if you choose to eat steak, "you want to go with grass-fed, hormone-free, free-range meats" rather than grain-fed meats, said Dr. Amen. "When you feed the animals the high-glycemic foods, they actually produce less of the good fat and more of the bad fat. So they're not as good for you." In other words, what your food eats affects your health too, according to Dr. Amen. <em>Photo courtesy of <a href="http://www.flickr.com/photos/mdid/" target="_hplink">mdid</a></em>

  • Herbs And Spices Don't Just Add Flavor

    Next time you're whipping up some grub, turn to your spice rack for an extra brain boost. Spices and herbs may do more for your health than you realize. According to Dr. Amen, cinnamon balances blood sugar; garlic, oregano and rosemary increase blood flow to the brain; curry acts as an anti-inflammatory; and saffron can have anti-depressant effects. <em>Photo courtesy of <a href="http://www.flickr.com/photos/spence_sir/" target="_hplink">S. Diddy</a></em>

  • Pour Out That Juice

    Next time you're craving a cold glass of juice with your breakfast, think again. "Juice is sugar that is unwrapped from its fiber source, and whenever you unwrap sugar from its fiber source, it can turn toxic in your body," said Dr. Amen. <em>Photo courtesy of <a href="http://www.flickr.com/photos/mamchenkov/" target="_hplink">Leonid Mamchenkov</a></em>

  • What You Eat For Breakfast Matters

    You may be dreaming about that delicious breakfast muffin all night, but you should probably steer clear of the breakfast pastries. "There's way too much bad fat and sugar," said Dr. Amen. Instead, he recommends a protein-heavy breakfast like a few boiled eggs, nuts and an apple. While Dr. Amen suggests eating lean protein at each meal, he believes it is "especially important in the morning because it helps you focus," he said. <em>Photo courtesy of <a href="http://www.flickr.com/photos/15216811@N06/" target="_hplink">Nicola since 1972</a></em>

  • Find Supportive Friends

    The last thing you need when you're trying to eat healthy are friends who try to coerce you to be unhealthy. "You have to deal with the food pushers in your life because they'll steal your health," said Dr. Amen. "The health of the people you spend time with will often determine your longevity." Make sure your friends understand and support your decision to eat healthier, and try to find other people who who are on the same healthy path as you.

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