The Brief: Do you actually need electrolyte packets?

"Nature's statin" is a tall order for a fiber, and this one mostly fills it. Pooled across 29 randomized trials in 2,769 people, psyllium lowered LDL ("bad") cholesterol by about 0.35 mmol/L and total cholesterol by 0.28 mmol/L, an LDL drop researchers link to roughly a 7% lower cardiovascular risk (Zhu et al., 2024). Soluble fiber like this even carries an FDA-authorized heart-health claim. It's the rare cabinet supplement that does what the label says. One caveat: because supplements aren't checked for contents before sale, a third-party mark (USP, NSF) tells you what's really in the tub.

The "eat in this order and beat glucose" trick has a real kernel: in a crossover study of 16 healthy adults, saving the carbs for last did blunt the post-meal glucose rise compared with eating them first (Sun et al., 2019). Measurable, and also small, short, and in a handful of people. What it wasn't shown to do is the part that sells it online: melt weight or kill cravings. The nice thing is it costs nothing and needs no product, so if the habit appeals, no harm done. Just don't expect the plate order to reshape you.

Joint pain is nearly universal, which makes it easy prey for a cheap "miracle." Borax isn't one. It's a cleaning and pesticide compound, and the toxicology review is blunt: swallowed boric acid and borax have caused human fatalities and carry reproductive-toxicity flags, with no arthritis benefit anywhere in the record (Hadrup et al., 2021). There is no safe home "protocol" to share, and that's the point: this is a household chemical, and drinking it is the actual danger. If your joints ache, that's a conversation for your own clinician.

The gummy aisle sells biotin as hair-and-nail fuel. But a systematic review found that every documented case of biotin actually helping involved someone with a genuine, usually rare, underlying deficiency or disorder, and no solid evidence it does anything for hair or nails in people who aren't deficient (Patel et al., 2017). Most of us get plenty from ordinary food. Worse, high-dose biotin can quietly skew common lab tests, including thyroid and heart-attack markers. A lot of sugar for a shine your body wasn't missing.

Start with what's true, because electrolytes aren't a scam. Sodium, potassium and the rest genuinely run your nerves, muscles and fluid balance, and when you lose a lot of them, a hard hour-plus workout, a soaked-shirt summer shift, a bout of vomiting or diarrhea, putting them back with more than plain water really does help. That's real physiology, and it's exactly what a good electrolyte mix is built for.

Here's the step the marketing skips. The "absorbs faster, hydrates better" line is lifted from oral rehydration therapy, the sodium-and-sugar science designed to rescue people losing fluid to illness, and resold to someone sitting at a desk. For a healthy person eating normal meals, the sports-medicine consensus is that you already start the day with normal electrolyte levels from food and ordinary drinking, and only need to add electrolytes when prolonged exercise or heavy sweat losses call for them (Sawka et al., 2007; Armstrong et al., 2007). The daily packet is answering a question your resting body isn't asking.

And "hydrates you better than water" wobbles the moment someone measures it. When researchers compared 13 drinks head-to-head for how well they kept people hydrated over four hours, a sports/electrolyte drink held fluid no better than plain water; only oral rehydration solution and milk, both far saltier or more caloric than a desk-side tub, actually beat it (Maughan et al., 2016). Grade the claim as it's sold, "you need these every day to hydrate," and the packet is charging a premium to fix a shortfall a healthy person doesn't have.

Push past an hour of hard exercise, sweat through a hot day, or lose fluids to a stomach bug, and the story flips: added sodium and potassium genuinely help you hold onto fluid and keep going (Sawka et al., 2007). That's the job electrolyte mixes were built for.

So yes, you can drink one every single day and still be on the right side of this, if your every day actually earns it. A two-hour mow in the sun, a run, a lift, a shift that soaks your shirt: that's real loss, and topping it off is the exception doing its job, not the myth. The packet was never the problem. Believing a rest-day desk requires one is. Right tool, specific job, honest question: did you lose it before you replaced it?

And one genuinely fair point in its favor: if a flavored packet is what actually gets you to drink enough water across the day, because plain water bores you and this doesn't, that counts as a win. Hydration you reach for beats perfect water you keep forgetting. Just know it's the flavor doing that work, not a mineral your body was short on, so pick one on taste and price, not on the hydration promise.

The "nature's Gatorade" pitch promises better hydration in a prettier can. Put to the test in 12 trained men, coconut water rehydrated them no better than a regular sports drink, or than plain bottled water, after a sweaty workout, with no edge in performance and a little more bloating (Kalman et al., 2012). A fine drink if you like it. Just not a hydration upgrade over the tap.

"Just drink more" sounds harmless, but it isn't limitless. Push far past thirst during long exercise and you can dilute your blood sodium into exercise-associated hyponatremia, a genuinely dangerous, occasionally fatal, over-hydration (Hew-Butler et al., 2015). The expert consensus is refreshingly low-tech: drink to thirst. More isn't a virtue, and your body already came with a gauge.

This week's gold medal in marketing physics goes to the tub promising to "hydrate you like an IV." An IV drip is for people who can't keep fluids down, a hospital tool for a medical emergency. You, reading this at your desk with a glass of water within reach, are not that person. Humans crossed deserts and ran down antelope on water and food long before anyone freeze-dried it into a dollar-twenty stick. The stick is convenient. It is not a breakthrough.

One line for the group chat: "replaces electrolytes" and "you need to replace electrolytes" are two different sentences. Sweat hard, run long, get sick, replace away. Sit at a desk sipping a packet because a reel said plain water is weak? That's a solution shopping for a problem. Ask whether you actually lost what you're topping off.

One claim. One verdict. Two minutes.

There's a fresh one landing Wednesday: I'm taking a claim you've almost certainly scrolled past this week, putting it on the scale, and grading it plainly. Hit reply and tell me what's blowing up your feed right now, it might be the one we grade next.

Be honest: is there a tub or box of electrolyte powder within arm's reach of you right now?