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If You Smell Funky Asparagus Pee, You Have This Special Gene

If You Smell Funky Asparagus Pee, You Have This Special Gene

Have you ever eaten asparagus and noticed how it changes the way your pee smells? You may have heard about the phenomenon but wonder why it seems to affect some people and not others.

Many researchers agree that the smell of asparagus pee results from the metabolism of a compound found exclusively in asparagus known as asparagusic acid. The compound is broken down into sulfur-containing compounds such as methanethiol, dimethyl sulfide, and dimethyl sulfoxide –which are responsible for the most prominent odor detected in asparagus pee. All of the above components can easily vaporize into a gaseous state at room temperature [1] –which brings them to your nose.

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Why can’t some people smell it?

The whole asparagus pee smell issue is a little complicated. Various theories attempt to explain why only some people can detect the odor in their pee after eating asparagus. Some researchers suggest that people who don’t detect the asparagus smell in their pee do not have the ability to produce the scent; others argue that everybody breaks down the asparagusic acid in the asparagus equally, only that some people simply lack the ability to detect the smell.

M Lison and other researchers [2]carried out a study to explore this phenomenon back in 1980 and discovered that actually everyone produces this “asparagus smell” but only a few people were able to smell it. The study also revealed that people who were able to detect the smell could even smell it in the urine of those who could not smell it. This reinforced the idea that the difference in the two groups of people was more as a result of perception than production.

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Another study published in the Oxford Journal [3] throws in yet another interesting twist. The study revealed that there still existed some differences even within the groups of subjects who could detect the smell and those who could not. Nevertheless, most scientists generally seem to back the theory that perception is the main reason some people are not able to detect any difference in the smell of their pee after eating asparagus.

Could the variation be genetic?

A DNA-sequencing company (23andMe) carried out an investigation in 2010 to find out if the ability to smell asparagus pee was linked to any genetic component. The study asked subjects if they could detect any odor in their urine after eating asparagus, and investigated the genetic similarities in the two groups. Findings revealed that the ability to detect the asparagus smell was linked to a certain DNA sequence that varied among different people. This means that a single mutation in the genes responsible for smell [4] may be the reason some people are unable to smell asparagus odor in urine.

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When all is said and done, it’s important to mention that only about 25% of the population seems to have this unique DNA sequence that allows them to smell asparagus pee. So basically, you do not need to worry about a thing; if you are able to smell the funny scent in your pee after eating asparagus, you’ve got a good nose and can be proud of it.

Featured photo credit: jackmac34 via pixabay.com

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Reference

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Christopher Jan Benitez

Christopher is a passionate writer sharing about lifestyle tips on Lifehack.

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Last Updated on March 24, 2021

8 Smart Home Gadgets You Need in Your House

8 Smart Home Gadgets You Need in Your House

We’ve all done it. We’ve gone out and bought useless gadgets that we don’t really need, just because they seemed really cool at the time. Then, we are stuck with a bunch of junk, and end up tossing it or trying to sell it on Ebay.

On the other hand, there are some pretty awesome tech inventions that are actually useful. For instance, many of the latest home gadgets do some of your work for you, from adjusting the home thermostat to locking your front door. And, if used as designed, these tools should really help to make your life a lot easier—and that’s not just a claim from some infomercial trying to sell you yet another useless gadget.

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Take a look at some of the most popular “smart gadgets” on the market:

1. Smart Door Locks

A smart lock lets you lock and unlock your doors by using your smartphone, a special key fob, or biometrics. These locks are keyless, and much more difficult for intruders to break into, making your home a lot safer. You can even use a special app to let people into your home if you are not there to greet them.

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2. Smart Kitchen Tools

Wouldn’t you just love to have a pot of coffee waiting for you when you get home from work? What about a “smart pan” that tells you exactly when you need to flip that omelet? From meat thermometers to kitchen scales, you’ll find a variety of “smart” gadgets designed to make culinary geeks salivate.

3. Mini Home Speaker Play:1

If you love big sound, but hate how much space big speakers take up, and if you want a stereo system that is no bigger than your fist, check out the Play:1 mini speaker. All you have to do is plug it in, connect, and then you can stream without worrying about any interruptions or interface. You can even add onto it, and have different music playing in different rooms.

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4. Wi-Fi Security Cameras

These are the latest in home security, and they connect to the Wi-Fi in your home. You can use your mobile devices to monitor what is going on in your home at all times, no matter where you are. Options include motion sensors, two-way audio, and different recording options.

5. Nest Thermostat

This is a thermostat that lives with you. It can sense seasonal changes, temperature changes, etc., and it will adjust itself automatically. You will never have to fiddle with a thermostat dial or keypad again, because this one basically does all of the work for you. It can also help you to save as much as 12% on heating bills, and 15% on cooling bills.

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6. Smart Lighting

Control your home lighting from your remote device. This is great if you are out and want to make sure that there are some lights on. It is designed to be energy efficient, so it will pay for itself over time because you won’t have to spend so much on your monthly energy bills.

7. Google Chromecast Ultra

Whether you love movies, television shows, music, etc., you can stream it all using Google Chromecast Ultra. Stream all of the entertainment you love in up to 4K UHD and HDR, for just $69 monthly.

8. Canary

This home security system will automatically contact emergency services when they are needed. This system offers both video and audio surveillance, so there will be evidence if there are any break-ins on your property. You can also use it to check up on what’s happening at home when you are not there, including to make sure the kids are doing their homework.

Featured photo credit: Karolina via kaboompics.com

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