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What would happen if you ate one of those silica gel packets?

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Well, for one thing, you'd be eating a misnomer. Silica gel isn't actually a gel, but a granular form of silicon dioxide (SiO2), a compound formed when silicon is oxidized.  Silica gel is synthetic but SiO2 is also commonly found in nature (I trust you've heard of sand and quartz.)

But before we discuss the consequences of ingestion, here's a quick history lesson. Silica gel has been around since at least the 1600s, but was a scientific curiosity until its absorbent properties were put to use during World War I in gas mask canisters. Walter Patrick, a chemistry professor at Johns Hopkins University, patented silica gel in 1919 and joined with Grace Davison, a Maryland-based chemical company, to further develop it. Davison began selling silica gel in 1923 but it didn't take off until World War II.

Silica gel can absorb a lot of water—about a third of its weight—without undergoing a chemical reaction or changing shape. Even when they're saturated, the granules stay dry to the touch and can be reused after heating at 250 °F for two hours. These properties make silica gel extremely useful for controlling moisture and humidity, and during the war it was used to keep medicine, military equipment and supplies dry.

Today it's packaged with leather products, pepperoni, electronics and vitamin pills and used in museums and libraries to guard against rust, corrosion, tarnishing, mildew, mold and spoilage.

Risk Assessment

So what happens if you decide to defy the warning on the packet, defy the social norms of polite society and munch on a few granules? I hate to be anti-climactic, but most likely, the answer is "¦nothing! (Of course, there are some caveats, which we'll get to in a minute.)

If you think about it, silica gel is basically man-made sand. It's non-toxic and chemically non-reactive. People who have eaten anywhere from a few beads to a whole packet have reported no ill effects. If you're curious, it's reportedly almost tasteless, like licking a postage stamp.

Why the Skull & Crossbones?

Why the warnings, then? Well, silica gel isn't completely dangerous, but it isn't completely safe. Here are a few reasons the packets come with stern warnings:

Dehydration "“ Silica gel's job is to absorb moisture, and it's going to keep doing that as you digest it. You'd have to eat an awful lot of it to dehydrate yourself, but if you did, it would dry you out in no time.

Silicosis "“ This lung disease, also called Grinder's disease and Potter's rot, is caused by inhaling silica dust and causes symptoms like scarring and nodular lesions in the upper lobes of the lungs, shortness of breath, fever, and cyanosis (blue tinted skin).

Foreign vapors and toxic additives "“ You don't know what the silica gel was exposed to between Point A and Point B. Eating a packet that came in a box of cockroach traps is definitely not recommended, but the gel could have absorbed other nasty stuff during manufacture or shipping and absorbed it. Sometimes, these things are added intentionally and packaged silica gel might have a bit of fungicide or pesticide added to it.

Another additive to watch out for is cobalt(II) chloride, which is toxic. This is added to the gel when a visible indication of absorption is needed. The cobalt(II) chloride makes the granules blue when they're dry and turn pink when they're saturated.

And the biggest reason? Lawsuits! "“ Even if the contents of a packet are plain old silica gel with no cobalt(II) chloride, and there's no silica dust present and there aren't enough granules to cause dehydration, companies have been sued over far stupider things. They're just covering their butts.

If you've got a burning question that you'd like to see answered here, shoot me an email at flossymatt (at) gmail.com. Twitter users can also make nice with me and ask me questions there. Be sure to give me your name and location (and a link, if you want) so I can give you a little shout out.

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30 Memorable Quotes from Carrie Fisher
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Just days after suffering a heart attack aboard a flight en route to Los Angeles, beloved actress, author, and screenwriter Carrie Fisher passed away at the age of 60 on December 27, 2016. Though she’ll always be most closely associated with her role as Princess Leia in Star Wars, Fisher’s life was like something out of its own Hollywood movie. Born in Beverly Hills on this day in 1956, Fisher was born into show business royalty as the daughter of singer Eddie Fisher and actress Debbie Reynolds.

In addition to her work in front of the camera, Fisher built up an impressive resume behind the scenes, too, most notably as a writer; in addition to several memoirs and semi-autobiographical novels, including Wishful Drinking, Surrender the Pink, Delusions of Grandma, The Best Awful, Postcards from the Edge, and The Princess Diarist (which was released last month), she was also an in-demand script doctor who counted Sister Act, Hook, Lethal Weapon 3, and The Wedding Singer among her credits.

Though she struggled with alcoholism, drug addiction, and mental illness, Fisher always maintained a sense of humor—as evidenced by the 30 memorable quotes below.

ON GROWING UP IN HOLLYWOOD

“I am truly a product of Hollywood in-breeding. When two celebrities mate, someone like me is the result.”

“I was born into big celebrity. It could only diminish.”

“At a certain point in my early twenties, my mother started to become worried about my obviously ever-increasing drug ingestion. So she ended up doing what any concerned parent would do. She called Cary Grant.”

“I was street smart, but unfortunately the street was Rodeo Drive.”

“If anything, my mother taught me how to sur-thrive. That's my word for it.”

ON AGING

“As you get older, the pickings get slimmer, but the people don't.”

ON INSTANT GRATIFICATION

“Instant gratification takes too long.”

ON THE LEGACY OF STAR WARS

“People are still asking me if I knew Star Wars was going to be that big of a hit. Yes, we all knew. The only one who didn't know was George.”

“Leia follows me like a vague smell.”

“I signed my likeness away. Every time I look in the mirror, I have to send Lucas a couple of bucks.”

“People see me and they squeal like tropical birds or seals stranded on the beach.”

“You're not really famous until you’re a Pez dispenser.”

ON THE FLEETING NATURE OF SUCCESS

“There is no point at which you can say, 'Well, I'm successful now. I might as well take a nap.'”

ON DEALING WITH MENTAL ILLNESS

“I'm very sane about how crazy I am.”

ON RESENTMENT

“Resentment is like drinking poison and waiting for the other person to die."

ON LOVE

“Someone has to stand still for you to love them. My choices are always on the run.”

“I've got to stop getting obsessed with human beings and fall in love with a chair. Chairs have everything human beings have to offer, and less, which is obviously what I need. Less emotional feedback, less warmth, less approval, less patience, and less response. The less the merrier. Chairs it is. I must furnish my heart with feelings for furniture.”

“I don’t hate hardly ever, and when I love, I love for miles and miles. A love so big it should either be outlawed or it should have a capital and its own currency.”

ON EMOTIONS

“The only thing worse than being hurt is everyone knowing that you're hurt.”

ON RELATIONSHIPS

“I envy people who have the capacity to sit with another human being and find them endlessly interesting, I would rather watch TV. Of course this becomes eventually known to the other person.”

ON HOLLYWOOD

“Acting engenders and harbors qualities that are best left way behind in adolescence.”

“You can't find any true closeness in Hollywood, because everybody does the fake closeness so well.”

“It's a man's world and show business is a man's meal, with women generously sprinkled through it like overqualified spice.”

ON FEAR

“Stay afraid, but do it anyway. What’s important is the action. You don’t have to wait to be confident. Just do it and eventually the confidence will follow.”

ON LIFE

“I don’t want life to imitate art. I want life to be art.”

“No motive is pure. No one is good or bad-but a hearty mix of both. And sometimes life actually gives to you by taking away.”

“If my life wasn't funny it would just be true, and that is unacceptable.”

“I shot through my twenties like a luminous thread through a dark needle, blazing toward my destination: Nowhere.”

“My life is like a lone, forgotten Q-Tip in the second-to-last drawer.”

ON DEATH

“You know what's funny about death? I mean other than absolutely nothing at all? You'd think we could remember finding out we weren't immortal. Sometimes I see children sobbing at airports and I think, 'Aww. They've just been told.'”

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Get This Weekend's Best Amazon Deals Now
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Amazon

As a recurring feature, our team combs the Web and shares some amazing Amazon deals we’ve turned up. Here’s what caught our eye today, October 21.

Mental Floss has affiliate relationships with certain retailers, including Amazon, and may receive a small percentage of any sale. But we only get commission on items you buy and don’t return, so we’re only happy if you’re happy. Good luck deal hunting!

GADGETS, TOYS, AND MEDIA

LBell Wireless Headphones V4.1 Wireless Stereo earbuds Built-in CVC6.0 Noise Cancellation Stereo Bluetooth Headphones with Mic and Apt-x for iPhone and Android Phones (White) for $22.99 (list price $76.99)

Cord Organizer, Earbud Holder, Leather Cord Organizer, Leather Cable Holder, Earphone Holder, Cable Organizer, Genuine Leather Cord Organizer (3 in 1 Packaging) SPECIAL OFFER for $6.99 (list price $19.99)

VicTsing Bluetooth FM Transmitter, Wireless In-Car Radio Transmitter Adapter /w USB Car Charger AUX Input 1.44 Inch Display TF Card Slot - Black for $18.99 (list price $39.99)

[Upgraded to 6700mAh] Anker Astro E1 Candy-Bar Sized Ultra Compact Portable Charger, External Battery Power Bank, with High-Speed Charging PowerIQ Technology (Black) for $16.99 (list price $59.99)

iphone Cable, Pecosso Lightning Cable : 3 Pack (10ft/6ft/3ft) Lightning to USB Fast Charging Cable, Nylon Braided Sync Cord Combination for iPhone 7/7plus/6s/6s plus/6/5s/iPad/iPod/Beats Pill - Black for $6.49 (list price $11.10)

iClever Quiet 7 Color Backlit Rechargeable Portable Bluetooth Keyboard for PCs, Tablets, Smartphones for $21.99 (list price $39.99)

Walcase Apple Watch Band 42mm, Fully Magnetic Closure Clasp Mesh Loop Milanese Stainless Steel iWatch Band for Apple Watch Series 3 Series 2 Series 1 Sport and Edition - Black for $11.99 (list price $32.99)

Jackery Giant+ Premium 12000mAh Dual USB Portable Battery Charger & External Battery Pack, Power Bank (Total 3.1A Output) for iPhone (e.g. iPhone 8 / 7 / 6), Samsung, and Other Smart Devices (Black) for $26.99 (list price $69.99)

iPhone 8, 7, 6S, 6 Screen Protector Glass, amFilm Tempered Glass Screen Protector for Apple iPhone 8, 7, iPhone 6S, iPhone 6 [4.7"inch] 2017 2016, 2015 (2-Pack) for $6.99 (list price $29.99)

Energizer AA Batteries, Double A Battery Max Alkaline (24 Count) E91BP-24 for $13.99 (list price $28.61)

KITCHEN

ThermoPro TP03A Digital Food Cooking Thermometer Instant Read Meat Thermometer for Kitchen BBQ Grill Smoker for $11.99 (list price $29.99)

Miusco 5 Piece Silicone Cooking Utensil Set with Natural Acacia Hard Wood Handle for $20.99 (list price $49.99)

Utopia Kitchen Premium Class Stainless-Steel 12 Knife Set with Acrylic Stand for $35.69 (list price $299.99)

[20 Pack] 3 Compartment Meal Prep Containers BPA Free Portion Control Bento Boxes (39 Oz.) for $17.99 (list price $39.99)

Rubbermaid LunchBox Sandwich Kit, Food Storage Container, Green for $6.79 (list price $39.00)

Spiral Slicer Spiralizer Complete Bundle - Vegetable Spiralizer and Cutter - Zucchini Pasta Noodle Spaghetti Maker for $14.84 (list price $39.99)

Pre Seasoned Cast Iron Skillet (12.5 inch) by Utopia Kitchen for $30.99 (list price $99.99)

Cuisinart CTG-00-3MS Set of 3 Fine Mesh Stainless Steel Strainers for $19.90 (list price $22.00)

Vremi 5 Piece Cheese Grater Set with Container - Microplane Zester Parmesan Cheese Shredder Vegetable Slicer Cheese Graters - Fine and Coarse Metal Hand Cheese Grater Adjustable Hard Cheese Slicer for $8.99 (list price $34.99)

ROCKSHEAT Pizza Stone Made of Cordierite for Pizza & Bread Baking Grilling. Perfect for Oven or Grill. Innovative Unique Double - faced Built - in 4 Handles Design (Rectangular 12"x15"x0.63") for $23.99 (list price $60.00)

Home-it Stainless Steel Bread Box for kitchen, bread bin, bread storage Bread holder 16.5x10x8 for $19.99 (list price $49.99)

Set of 9 Grey Beverage Chilling Stones [Chill Rocks] Whiskey Stones for Whiskey and other Beverages - in Gift Box with Velvet Carrying Pouch - Made of 100% Pure Soapstone - by Quiseen for $7.95 (list price $18.99)

HOME

TasteLife 105 GSM Deep Pocket Bed Sheet Set Brushed Hypoallergenic Microfiber 1800 Bedding Sheets Wrinkle, Fade, Stain Resistant - 4 Piece(White,Queen) for $14.90 (list price $119.90)

Zober Premium Quality Space Saving Velvet Hangers Strong and Durable Hold Up To 10 Lbs - 360 Degree Chrome Swivel Hook - Ultra Thin Non Slip Suit Hangers, Black - 50 pack for $22.95 (list price $39.99)

Cr Sleep Ventilated Memory Foam Bed Pillow with AirCell Technology, Standard, 1-Pack for $25.49 (list price $89.99)

StorageManiac Foldable Pop-Up Mesh Laundry Hamper with Reinforced Carry Handles, 2-Pack for $16.99 (list price $39.99)

Monkey Hook Picture Hanger Home and Office Pack, 30 pc set for $11.24 (list price $19.75)

Syntus Himalayan Salt Lamp Natural Crystal Salt Light Glow Hand Carved Night Lights Wall light with UL Listed Plug for Lighting, Decoration and Air Purifying for $12.99 (list price $21.99)

LED String Lights 33 ft with 100 LEDs, TaoTronics Waterproof Decorative Lights for Bedroom, Patio, Parties ( Copper Wire Lights, Warm White ) for $14.49 (list price $29.99)

Whitmor Supreme Wide Stacking Shelf, Chrome for $15.35 (list price $32.02)

Hoover FH50251PC Power Scrub Elite Pet Carpet Cleaner for $169.99 (list price $189.00)

HEALTH AND BEAUTY

Activated Charcoal Natural Teeth Whitening Powder by Pro Teeth Whitening Co® | High Quality Grey Charcoal (non abrasive and proven safe for enamel) From Coconut Shells | Manufactured in England for $12.99 (list price $29.99)

TheraFlow Dual Foot Massager Roller (Large) - Relieve Plantar Fasciitis, Heel, Foot Arch Pain & Stress - Foot Chart & Instructions Included - Acupressure/ Reflexology Tool - Perfect Gift for $16.95 (list price $49.99)

Apple Cider Vinegar - Pills for Weight Loss - Includes: Vitamin B6, Spirulina, Lecithin & Kelp - Helps Support Detox, Digestion & Circulation, 350 mg, 90 Capsules for $18.92 (list price $28.59)

B.I.G. Natural Pre Shave Oil, 60 ml for $12.95 (list price $25.00)

Pure Body Naturals Essential Oils Gift Set, Lavender/Tea Tree/Eucalyptus/Lemongrass/Orange/Peppermint, 6 count - 10 ml for $14.95 (list price $17.95)

Colgate Max Fresh Wisp Disposable Travel Toothbrush, Peppermint - 24 Count for $4.99 (list price $7.99)

Nano Towel Makeup Remover Face Cloth. Remove Cosmetics FAST and Chemical Free. Wipes Away Facial Dirt and Oil Like An Eraser. Great for Sensitive Skin, Acne, Exfoliating, Mascara, etc. 7 x 16" for $14.97 (list price $29.99)

CCS Blackhead Remover Pimple Extractor with Instructions for Acne Comedone Whitehead Blemish Zit Removal Tool Kit for $6.97 (list price $49.97)

Oneleaf 2PCS Professional Pedicure Rasp Foot File Cracked Skin Corns Callus Remover for Extra Smooth and Beauty Foot for $9.99 (list price $19.99)

OUTDOORS, GARDEN, AND SPORTS

Wilson Championship Extra Duty Tennis Ball (4-Pack), Yellow for $15.16 (list price $20.18)

Anker Ultra-Bright Tactical Flashlight with 1300 Lumens, Rechargeable(26650 Battery Included), IP67 Water-Resistant, Bolder LC130 LED with 5 Light Modes For Camping, Security, Emergency Use for $45.99 (list price $112.00)

Enkeeo Foldable Fishing Net Triangular Landing Net with Aluminum Pole and Nylon Mesh, 14.6" Wide for $19.99 (list price $39.99)

G4Free 12x25 Compact Binoculars(BAK4,Green Lens),Large Eyepiece Super High-Powered Field Surveillance Binoculars for $24.99 (list price $39.99)

Stansport Canteen, 4-Quart for $7.97 (list price $10.49)

HEIMDALL Safety Whistle with lanyard (2 pack) for Boating Camping Hiking Hunting Emergency Survival Rescue Signaling for $8.95 (list price $10.99)

Veegul Stylish Doctor Style Canvas School Backpack Functional Travel Bag for Men Women Semizipper Pocket x Black VG for $39.99 (list price $74.50)

Enkeeo Foam Roller 13” × 6” EVA with Grid Design Muscle Rollers for Deep Tissue Myofascial Release, Sports Massage and Recovery, Trigger Point Therapy, Pilates & Yoga, Black for $16.99 (list price $29.99)

TOOLS

Pumie Toilet Bowl Ring Remover #TBR-6 for $9.15 (list price $14.33)

Gorilla 7700104 Super Glue Gel, 20g for $5.97 (list price $14.89)

Worthington 336737 WT2301 Trigger Start Propane Torch for $16.97 (list price $19.99)

Bosch T4021 Screwdriver Bit Set, Blue, 21-Piece for $8.17 (list price $14.99)

DEWALT DW1361 Titanium Pilot Point Drill Bit Set, 21-Piece for $19.99 (list price $25.99)

Tire Inflator, 3-in-1 Inflation Gun, with Gun, Locking Chuck and 2-inch Gauge, ¼” NPT and Flexible Hose (Campbell Hausfeld MP600000AV) for $9.94 (list price $13.49)

Stanley 84-056 3-Piece Bi-Material Pliers Set for $13.18 (list price $18.29)

Stanley 55-525 15-inch Super Wonder Bar Pry Bar for $9.89 (list price $13.29)

Picture Hanging Kit Asst for $9.99 (list price $12.99)

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