Brain Fog on Calcium, Vitamin D, or K2 | Masterjohn Q&A Files #310
Auto-extracted preview. These recommendations were transcribed and classified from the episode audio. Timestamps link to the source; classifications are not yet editorially verified.
What Chris Masterjohn recommended
In transcript order-
Organic (prompted)
For someone with vitamin A deficiency symptoms whose D/K2/calcium supplementation causes brain fog, increasing vitamin A may rebalance the A-to-D ratio and prevent hypophosphatemia-driven brain fog.
“it makes sense to think about vitamin A
CaveatsSpeculative; based on the listener's specific history of needing high vitamin ACertaintyhedgedrecommendation -
Organic (prompted)
Cautions that 880–2000 IU vitamin D may cause brain fog in someone with marginal vitamin A status by biasing the calcium-phosphorus balance toward hypophosphatemia.
Dosage880–2000 IU was symptomatic for this listenerCaveatsThis is case-specific; 2000 IU is reasonable for the average personCertaintyhedgedmild caution -
Organic (prompted)
180 mcg MK-7 can shift calcium and phosphorus into bone via MGP activation, potentially causing hypophosphatemic brain fog or heart palpitations in vulnerable individuals.
“people who are getting heart palpitations from 180 micrograms of MK7
Dosage180 mcg MK-7 dailyCaveatsAffects only a minority; speculative mechanism via MGP activationCertaintyhedgedmild caution -
Guest recommendation
A commenter (Iris) reported 10 mg/day copper allowed her to raise calcium without brain fog, skin rashes, fungal infections, or nerve pain; Masterjohn speculates this reflects a copper transporter defect.
“copper has worked and made me able to raise my calcium intake
Dosage10 mg copper per dayCaveatsHigh-dose copper; mechanism speculative; case-specificCertaintypersonal onlypersonal use -
Masterjohn notes Pure Encapsulations supplements rarely cause idiosyncratic reactions, so a reaction to their calcium citrate likely reflects a real calcium effect rather than an additive issue.
“people who have idiosyncratic reactions to supplements often don't have those reactions to pure encapsulations
CaveatsBased on Masterjohn's personal observationCertaintypersonal onlyoffhand mention -
Sponsor read
Masterjohn promotes his Masterpass membership for access to live Q&A sessions, recordings, and transcripts, with a 10% discount via a Substack signup link.
“join at chrismasterjohnphd.com slash masterpass
DosageSign up at chrismasterjohnphd.substack.com/QANDA for 10% offCertaintyexplicitrecommendation