Questions
Real questions, straight answers.
The questions Americans actually search about longevity, each answered in plain English with the sources. Short answer first.
Tests
Is Function Health worth it?
Function Health is $365 for the first year: 160+ lab tests over two draws at Quest labs, with a clinician summary. It…
Tests
Function Health vs Superpower: which is better?
They are close on price and labs: Function is $365 for 160+ tests, Superpower is $349 for 150+ biomarkers, and both…
Tests
What is Lp(a), and should you test it once?
Lp(a), lipoprotein(a), is a cholesterol-carrying particle whose level is set mostly by your genes and barely moves with…
Tests
Can you order your own blood tests without a doctor?
Yes, in most US states. Quest and Labcorp both sell tests directly to consumers online: you pay, an independent…
Tests
Is a full-body MRI worth it if you’re healthy?
For healthy adults with no symptoms, no. The American College of Radiology doesn’t recommend whole-body MRI screening,…
GLP-1
Is Zepbound the same as Mounjaro?
Same molecule, different label. Both are tirzepatide, made by Eli Lilly and injected weekly. Zepbound is FDA-approved…
GLP-1
Is Zepbound better than Wegovy?
For weight loss, yes in the one head-to-head trial: over 72 weeks, people on Zepbound lost about 20.2% of body weight…
GLP-1
Does Medicare cover Zepbound and Wegovy for weight loss?
Since 1 July 2026, yes, for some people. Under the Medicare GLP-1 Bridge, eligible Part D members who meet the BMI and…
GLP-1
Is there a GLP-1 pill for weight loss?
Yes, two are FDA-approved. The Wegovy pill, oral semaglutide 25 mg, was approved on 22 December 2025 and produced about…
GLP-1
Is compounded semaglutide FDA-approved?
No. Compounded semaglutide and tirzepatide are not FDA-approved, and the FDA doesn’t check them for safety,…
Supplements
Does creatine cause hair loss?
Current evidence says no. The only trial that measured hair, a 12-week study of 5 g a day in 45 resistance-trained men…
Supplements
Is creatine bad for your kidneys?
In healthy people, studies have not found kidney harm at the doses trials use, including up to 30 g a day for five…
Supplements
Do creatine gummies work?
Some do, many don’t, and you can’t tell from the label. Creatine breaks down in moist formats, and independent tests…
Supplements
Is creatine good for women over 50?
For muscle and strength, yes, if it comes with strength training. Meta-analyses of adults aged 57 to 70 show creatine…
Supplements
Does creatine help memory and brain health?
A little, mostly for older adults. Meta-analyses find small improvements in memory, with the clearest effect in people…
Supplements
Creatine HCl vs monohydrate: which is better?
Monohydrate. It is the form used in almost all of the research, and a 2022 review by the International Society of…
GLP-1
Does Wegovy cause hair loss?
It can. Hair loss is listed on the Wegovy prescribing information among the common side effects, meaning it was…
GLP-1
What happens when you stop taking Wegovy or Zepbound?
Most of the weight comes back. In STEP 4, people switched from semaglutide to placebo after 20 weeks regained weight…
GLP-1
How much does Zepbound cost without insurance?
Through LillyDirect, Lilly’s own pharmacy, on 30 September 2026: $299 a month for 2.5 mg, $399 for 5 mg, and $449 for…
GLP-1
How much does Wegovy cost without insurance?
Through NovoCare Pharmacy, Novo Nordisk’s own channel, on 30 September 2026: $199 a month for each of the first two…
GLP-1
Should Zepbound be refrigerated?
Yes, as the default. The Zepbound label says to store it in the refrigerator at 2 to 8 °C, never frozen, in its carton.…
Supplements
Does creatine make you gain weight or look bloated?
A little, at first, and it is mostly water. Creatine pulls water into muscle cells, so many people see the scale rise…
Tests
Are biological age tests accurate enough to trust?
Not accurate enough to act on for one person. A 2022 study in Nature Aging found that technical noise alone moved six…
Supplements
Is protein powder good for women over 50?
It can be, as a convenient way to reach a higher protein target. The US RDA is 0.8 g per kg of body weight a day, while…
Wearables
Is the Oura Ring accurate for sleep and heart rate?
Fairly accurate for total sleep and overnight heart rate, less so for spotting wake time and sleep stages. Against lab…
GLP-1
Do GLP-1 drugs like Wegovy and Zepbound cause muscle loss?
Some lean mass is lost, as with any major weight loss, but most of what goes is fat. In a SURMOUNT-1 scan substudy,…
GLP-1
Which GLP-1 drug is FDA-approved for sleep apnea?
Zepbound (tirzepatide) is the one. On December 20, 2024, the FDA approved it for moderate to severe obstructive sleep…