Canned light tuna averages about 0.126 ppm of mercury based on FDA monitoring data.

Typical prevention dosing starts at 500 mg with meals and may increase to 1,500–2,000 mg daily if tolerated.

In canned tuna, one 5-oz can of light tuna averages ~14 µg mercury; white (albacore) averages ~40 µg based on FDA testing.

Human brain memory capacity is often placed around a few petabytes, but it isn’t a fixed hard-drive limit.

Normal age-related memory change is mild—occasional name or word slips that don’t hinder daily life; frequent or worsening gaps call for a checkup.

Heavy menstrual bleeding usually means more than 80 mL per cycle or periods over 7 days with flooding or large clots.

Menthol intake depends on form: follow each product’s label, and keep added dietary menthol near 0–4 mg per kg of body weight per day.

Daily menthol intake up to 4 mg per kilogram of body weight from oral sources is generally considered safe by international reviews.