A sleeve or bypass is a metabolic operation. The shed that follows is often the hair cycle catching up to a calorie and protein deficit, not instant male-pattern baldness.
ASMBS educational material and many bariatric dietitians warn that hair thinning three to six months after surgery is common and often telogen. Iron, zinc, protein, B12, and folate are monitored because malabsorption is the point of some operations — extra iron is still harmful if you are not low, which is why labs exist. The American Academy of Dermatology treats telogen as timing plus exam. This site already has a hair-after-weight-loss page; this one is specifically the surgical calorie drop and supplement labs, not a crash-diet blog. This is not medical advice.
Do not start oral minoxidil or finasteride in the early postoperative window without the bariatric team and a dermatologist. Pregnancy after bariatric surgery has its own delay rules; hair drugs have pregnancy warnings too. Biotin megadoses still scramble assays. Protein targets come from your program, not from a keratin powder ad.
Dumping, black stools, or neurologic symptoms are surgical-team calls, not a new biotin gummy. This is not medical advice.
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Will hair grow back after the shed?
Telogen often improves as weight stabilises and labs are replete. Pattern loss can coexist. Photograph and ask.
Is zinc the missing hair mineral?
Zinc can be low after some bypasses. Extra zinc causes copper deficiency. Labs and the dietitian, not a mega-zinc protocol.
Can I color my hair during the shed?
Shafts are more fragile. Gentle cosmetics. Color does not treat telogen.
Does this mean I need a transplant now?
Surgeons usually want a stable weight and a diagnosis. Telogen is a waiting game. Do not book grafts on month three from a fear post.
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- 切れ毛、または急速な脱毛
- 全身性の徴候を伴う脱毛（体重減少、倦怠感、月経の変化、ニキビ、毛の増加）
- 新しい薬の直後の脱毛
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