Debate erupts on 5ch over how to lower blood pressure — “Seriously, just go see a doctor”

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The story

On a 5ch message board, users traded tips on “how do you actually lower your blood pressure?” In Japan, a reading above 140 systolic / 90 diastolic is generally the benchmark for recommending a doctor’s visit, and the thread ranged widely — from concrete fixes like cutting salt, exercising, and taking blood pressure medication, to the view that rising blood pressure with age is a natural process not worth obsessing over. Opinions split, though, on whether blood pressure that’s gone up can truly come back down, and on what counts as a healthy target for elderly people — and in the end, the recurring refrain was “don’t trust amateur judgment, talk to an actual doctor.”

What people said

1AnonymousSep 22, 2026 19:37
Guess I'm done for…
4AnonymousSep 22, 2026 19:39
Take your meds.
If they're the right ones, you'll be back to normal in three months.
Mine went from 160 down to 117.
5AnonymousSep 22, 2026 19:41
Mine was 124 over 87…
10AnonymousSep 22, 2026 19:43
Re: #5
Wait, don't tell me — are you the guy who's always making those "I have no motivation, I want to die" threads?
7AnonymousSep 22, 2026 19:42
Isn't it pointless unless you fundamentally change your lifestyle?
Even if it drops, it'll probably just bounce right back.
8AnonymousSep 22, 2026 19:42
Should I go to the hospital and get medication for cutting fat too?
9AnonymousSep 22, 2026 19:42
Honestly I still don't really get why it goes up in the first place.
13AnonymousSep 22, 2026 19:48
Apparently you're supposed to raise your "butt pressure" though (a pun — ketsu-atsu sounds almost like ketsuatsu, "blood pressure")
14AnonymousSep 22, 2026 19:49
Quit all soft drinks and sugary sodas (including the zero-calorie kind).
If you absolutely need something like that, mix carbonated water with unsalted tomato juice half and half.
If it's not punchy enough, add a splash of Pokka Lemon 100 (bottled lemon juice).
16AnonymousSep 22, 2026 19:53
Re: #1
Take medication.
Do cardio every day.
Fix your diet (cut salt, eat potassium-rich vegetables).
18AnonymousSep 22, 2026 19:53
These days they tell you to see a doctor once you hit 140.
23AnonymousSep 22, 2026 20:06
Re: #18
Mine was flagged just from the bottom number hitting 90.
20AnonymousSep 22, 2026 19:54
Drink one glass of no-salt-added tomato juice a day.
The potassium flushes out excess salt while the lycopene helps lower blood pressure.
Also natto — it helps keep calcium and other stuff from building up inside your blood vessels.
28AnonymousSep 22, 2026 20:12
Re: #20
Won't that spike your blood sugar though?
22AnonymousSep 22, 2026 20:06
Lately everyone around me has high blood pressure.
31AnonymousSep 22, 2026 20:17
Re: #22
It's aging.
As you get older your blood vessels stiffen, so your blood pressure rises even if you're living a perfectly healthy life.
You don't need to obsess over it, but you do need to manage it.
24AnonymousSep 22, 2026 20:07
Honestly, it's more dangerous if it drops too low.
25AnonymousSep 22, 2026 20:08
Re: #24
"Dangerous" doesn't even cover it — that's heart disease.
37AnonymousSep 22, 2026 20:31
In the end, talking to an actual doctor beats amateurs like us speculating and googling around.
39AnonymousSep 22, 2026 20:39
Re: #37
Do they ever tell you anything besides "take your meds"?
46AnonymousSep 22, 2026 21:03
You've actually got the logic backwards.

You're not unhealthy because your blood pressure is high —
your blood pressure is high because you're unhealthy.

Don't make lowering the number your goal, aim for a healthy body instead (´・ω・`)
48AnonymousSep 22, 2026 21:04
Re: #46
In the end it really does just come down to good food and reasonable exercise.
52AnonymousSep 22, 2026 21:06
Once blood pressure goes up, it never truly comes back down.
If the number looks like it's dropped, some other part of your body is just compensating for it.
56AnonymousSep 22, 2026 21:10
Re: #52
No, come on…
Just losing weight alone will lower it, for example.

The volume of blood that needs pumping goes down, so the pressure needed to pump it goes down too.
53AnonymousSep 22, 2026 21:08
Heard my uncle's blood pressure was 200 — too high, so they couldn't operate on him until it came down.
60AnonymousSep 22, 2026 21:15
Re: #53
Apparently if you get hurt while drunk, they can't operate until the alcohol's out of your system either.
54AnonymousSep 22, 2026 21:08
Seriously though, just go see a doctor.
I doubt anyone here is dumb enough to actually take health advice from random strangers on a board like this, but still.
57AnonymousSep 22, 2026 21:13
Re: #54
Yeah, that's right.
Safest bet is to see an internist and then get guidance from a registered dietitian.

I'm actually a licensed nurse myself, but this kind of thing really is case-by-case.

If it's caused by kidney trouble, the whole treatment approach changes. (Cutting salt is still the basic diet advice, but you'd also need to limit protein.)
58AnonymousSep 22, 2026 21:14
The doctor at the blood donation center said it's fine even if it's high.
61AnonymousSep 22, 2026 21:16
Re: #58
It's fine for donating blood, but it's still a health problem.
High blood pressure itself is a sign something's off with your circulatory system.
72AnonymousSep 22, 2026 21:58
It's fine for young people to sit around 120 over 80, but isn't it weird to apply the same standard once you're old? Blood vessels stiffen with age, so staying the same just isn't realistic (obviously actual extreme values are still bad).
I've also heard that elderly people with low blood pressure often can't walk properly and decline mentally faster, while running a bit higher keeps them active and sharper.
Both for the country and for families with elderly relatives, dying suddenly while still active ("pin-pin korori" — living healthy right up until a quick death) beats years bedridden.
76AnonymousSep 22, 2026 22:14
Re: #72
Blood pressure rises as you age — that's natural, so it's not really a problem.
74AnonymousSep 22, 2026 22:05
My autonomic nervous system is wrecked so my pulse won't come down.

82AnonymousSep 22, 2026 22:46
The daily salt limit is supposed to be 7.0g (6.0g if you already have high blood pressure).
One bowl of ramen: 7.5g (5.0g of that from the soup alone)
One plate of "Napoleon": 6.0g (likely meant to say napolitan spaghetti)
One cup noodle: 4.5g
One plate of homemade yakisoba: 3.5g
One plate of homemade curry: 2.5g
A convenience-store sandwich (the 3-piece kind): 2.5g of salt
A convenience-store rice ball: 2.0g
Soy sauce, one tablespoon: 2.0g
83AnonymousSep 22, 2026 22:48
Re: #82
"One plate of Napoleon" — what's that supposed to mean? You mean the whiskey?
88AnonymousSep 22, 2026 23:23
I've had migraines since I was young, but ever since I started taking blood pressure medication, they've completely gone away.
93AnonymousSep 23, 2026 00:04
Re: #88
That's like saying "I got anesthesia and now nothing hurts."

Background and key points of this discussion

Japan’s diagnostic benchmark for high blood pressure is a reading of 140 systolic over 90 diastolic, and going past it typically prompts a recommendation to see a doctor. In the thread, opinions split between lifestyle fixes — cutting salt, eating potassium-rich foods, doing cardio — and treating it mainly with blood pressure medication. Notably, claims that elevated blood pressure never truly returns to normal were met with pushback pointing out that losing weight reduces the volume of blood that needs pumping and therefore lowers the pressure required — anecdotes with no real expert backing sitting side by side. There was also debate over whether the same standard should apply to the elderly, given that hardening blood vessels naturally push blood pressure up with age, with some arguing the real goal should be overall health rather than just chasing a lower number. A few posters in the thread claimed to be nurses or registered dietitians, but these are all anonymous, self-reported claims — any actual treatment plan needs to be based on an actual doctor’s diagnosis.

※This article is excerpted and summarized from a 5ch “Hardware/Industry” board (nicknamed “Geha,” a board known for console-war-style threads) thread: “So, how do you actually lower your blood pressure?

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