Does Reading At Dusk Damage Our Eyes?

The enjoyment of reading in the evening hours is often clouded by fears of long-term damage to the eyes. However, this concern is unfounded, as a closer examination of the visual process in the dark shows. There are two different types of light receptors (photoreceptors) on the retina of the eye. The rods are highly … Does Reading At Dusk Damage Our Eyes?

Black birthmark – How dangerous is it?

Introduction Everyone has moles and moles. A birthmark consists of a collection of cells that form pigments, called melanocytes or similar nevus cells. Birthmarks have an even tan, while nevus cells form a dot-like tan. Colloquially, both forms are called birthmarks. A birthmark can be flat or raised and differently browned. A birthmark can be … Black birthmark – How dangerous is it?

Examination of birthmarks | Black birthmark – How dangerous is it?

Examination of birthmarks Most moles are harmless. To distinguish dangerous moles from harmless ones, the dermatologist examines the black mole with a dermoscope, a magnifying glass instrument. Using the ABCD rule, the dermatologist examines the spots. A for asymmetry, B for limitation, C for color and D for diameter. Moles that are asymmetrically shaped, irregularly … Examination of birthmarks | Black birthmark – How dangerous is it?

I have many moles – what is behind them? | Black birthmark – How dangerous is it?

I have many moles – what is behind them? There are factors that favour the appearance of birthmarks. On the one hand, there are hereditary factors, the skin type and the pigment melanin. Scientists assume that the probability to get numerous birthmarks itself is the more frequent, the more frequently birthmarks occur in the relationship. … I have many moles – what is behind them? | Black birthmark – How dangerous is it?

Biorhythm and Drugs

The bad news: biorhythm calculations are about as informative as coffee grounds. The good: biological rhythm exists. Over the course of its evolution, humans developed an internal clock that, seen over the span of a day, adjusted to the change between light and dark. Our internal clock Over thousands of years, the day-night rhythm set … Biorhythm and Drugs