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Yes, fasting can shift period timing or flow in some people; calorie intake, stress, and health history shape the effect.

No, fasting doesn’t trigger type 1 diabetes; it arises from an autoimmune attack on insulin-making beta cells.

Yes—fasting can set the stage for trapped wind when meal timing, portions, and food choices change after the fast.

No, common fasting patterns don’t cause thyroid disease; fasting can shift thyroid hormones and affect medication timing.

No, typical time-restricted eating doesn’t cause thyroid disease; long, severe restriction can shift hormones and complicate medication.

Yes, fasting can coincide with swollen feet, usually from fluid shifts, salt-heavy refeed, long sitting, or a separate health issue.

Yes, strict fasting can delay a menstrual period by lowering energy availability and disrupting hormone signals.

Yes, fasting can trigger lower abdominal pain through dehydration, constipation, acid irritation, or gallbladder issues.

Yes, fasting can trigger mouth ulcers in susceptible people, mostly through dry mouth, irritation, or nutrient gaps.

No, fasting by itself doesn’t cause kidney failure; the risk rises with dehydration, chronic kidney disease, and certain medicines.