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"We are shaped by our thoughts; we become what we think. When the mind is pure, joy follows like a shadow that never leaves."
Could it be something radioactive/nuclear if they're using lead masks and they'd have to put the mask on to protect from? Also the tablets could have been something to protect them from radioactivity. In X-Ray Clinics staff use lead collars on patients to protect the thyroid if the x-ray is high near the throat and wear lead aprons themselvesd or protect themselves in a room.
Radioactive materials may be internally deposited in the body when
an uptake occurs through one of the three routes of entry: inhalation,
ingestion and skin contact. These exposures can occur when
radioactive material is airborne; is inhaled and absorbed by the
lungs and deposited in the body; is present in contaminated food,
drink or other consumable items and is ingested; or is spilled or
aerosolizes onto the skin and absorbed or enters through cuts or
scratches. Internal deposition may also result from contaminated
hands, with subsequent eating or rubbing of eyes.
arise when radiation is emitted from radioactive materials present
within the body. Although external hazards are primarily caused
by x-rays, gamma rays, high energy betas and neutrons, all forms
of radiation (including low energy betas, gammas and alphas) can
cause internal radiation exposures. Alpha particles create a high
concentration of ions along their path, and can cause severe damage
to internal organs and tissues when they are inhaled, ingested or
are present on the skin. Once these particles get into the body,
damage can occur since there is no protective dead skin layer to
shield the organs and tissues. Internal exposures are not limited
to the intake of large amounts at one time (acute exposure). Chronic
exposure may arise from an accumulation of small amounts of radioactive
materials over a long period of time.
It is known
that many substances taken into the body will accumulate in certain
body organs, called target organs. For example, iodine will accumulate
in the thyroid gland. When iodine is inhaled or ingested, the body
cannot distinguish stable iodine from radioactive iodine; a significant
portion of the inhaled iodine will be deposited in the thyroid gland
within 24 hours.