cross-posted from: https://lemmy.blahaj.zone/post/24280496
dog rule
this post was submitted on 10 Apr 2025
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This isn't true. Our diets are ideally made of vitamins and minerals and amino acids (and more) that all work with each other and counteract each other in a delicate balance, along with whatever anatomy we have like receptors or enzymes or current storage of these nutrients, along with whatever genes we have.
This is complicated, and no, it's never one size fits all. However, a lot of US diet is based in -high vitamin A, high tyramine, high omega 6, high sodium, high glucose, and
-low vitamin e, d, k, magnesium, iron, copper, selenium, omega 3s, vitamin Bs, vitamin C, potassium
Many many many many diseases are associated with chronic vitamin deficiencies. You absolutely may need different amount of different vitamins for your anatomy and diet. Most doctors ASSUME our diets are adequate but do not actually check, and those assumptions aren't taking into account that some populations likely use more of some vitamins than others, so what looks like an adequate amount in one person may not actually be enough in another. Or seasonally, eg we need more zinc in the summertime to deal with heat stress, we get more vitamin D in the summer as well.
Seriously, just try to get 100% of your daily intake of just potassium and vitamin K with foods and tell me who is eating like that every day. We are not all eating adequate diets by any means.
You're on a whole othef league here.
If you down soda all day and can't get out of the couch, it's not vitamin problems you should worry about.
Also, don't just eat vitamins if you don't actually have a real deficiency. You can intake too much of some like the fat soluble ones.
Also 90%+ of westeners lack vitamin D (because we're not out getting skin cancer in the sun 10h a day).
But yeah, eat a well balanced diet and keep checks on your physical health is key to good health.
I'm telling you, you're simplifying something inappropriately.
Lack of movement or energy is a classic vitamin deficiency sign, particularly anemia / iron / b12 /b vitamins / copper / iodine. If you cant get off the couch, you definitely need to try vitamins, and likely have an imbalance of vitamins you intake vs what you need.
https://www.hematology.org/newsroom/press-releases/2024/over-half-of-iron-deficiency-cases-in-large-health-system-still-unresolved-at-three-years
You can only really intake too much of fat soluble retinol-based vitamin A, about 10k IU daily, which can cause not only liver damage but skin to slough off at higher levels (1mil IU).
https://www.sciencehistory.org/stories/disappearing-pod/death-by-nutrition/
Vitamin K has never been found to have an upper limit, and vitamin E has a classic upper dosage of 1000IU but some dosages are as high as 4000IU per day. Likewise vitamin D has postulated upper limits but some get injections of 300k IU. Vitamin D can cause odd issues with calcium, and ofc calcium levels being off can cause odd issues with potassium and magnesium levels and so on. Supplementing therefore should be done thoughtfully and with the patient's health as a whole in mind.
You can't continuously get blood checks on all of your levels.
It's OK to supplement if you want. Just watch out for retinol and B6. And don't take stuff like Ashwaganda etc, take actual vitamins and minerals first