Ask the Experts (Scientific American Special Online Issue by Scientific American PDF

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A 1997 article in the British Medical Journal by Michael Peel, senior medical examiner at the Medical Foundation for the Care of Victims of Torture, cites well-documented studies reporting survivals of other hunger strikers for 28, 36, 38 and 40 days. But most such reports have been poorly substantiated. Unlike total starvation, near-total starvation with continued hydration has happened frequently. Survival for many months to years is common in concentration camps and during famines. The body can moderate metabolism to conserve energy.

Bachman, Austin, Tex. “Shin splints,” the layman’s term for the painful sensations felt at the front of the shinbone (tibia) after exercise, occur when the constant pounding and stresses placed on the muscles, bones and joints overwhelm the body’s natural ability to repair damage and restore itself. We commonly see shin splints in athletes, military recruits and even in middle-aged weekend warriors, especially at the beginning of milder weather. Overworked muscles are one major source of the aches.

Each works on different pigment colors and compounds, so the dermatologist will use one or a combination of lasers depending on the nature of a given tattoo. ) Tattoo pigment is inserted into the dermal layer of the skin through ruptures in the top layer, or epidermis. To remove that pigment, the laser emits very short pulses, which are selectively absorbed by the color of the tattoo ink. This high energy fragments the pigment into smaller particles that are then removed by the body’s immune system.

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Ask the Experts (Scientific American Special Online Issue No. 25) by Scientific American

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