For example, dopamine plays a big role in starting movement, and the destruction of dopamine neurons in an area of the brain called the substantia nigra is what produces the symptoms of Parkinsonâs disease. Dopamine also plays an important role as a hormone, inhibiting prolactin to stop the release of breast milk.
Why are sunspots darker than the rest of the Sun? Sunspots appear dark (in visible light) because they are much cooler than the rest of the surface of the Sun. However, even though they appear dark, they are still very hot. Sunspots have temperatures around 6,300 Fahrenheit (~3,500 Celsius) while the surrounding surface of the sun has a temperature of about 10,000 Fahrenheit (5,500 Celsius). If a sunspot was alone in space, it would glow brightly.
Apply an eye cream containing vitamin K and retinol. Dark circles may be caused by a deficiency of vitamin K. Regardless of the cause, however, skin creams containing these two ingredients reduce puffiness and discoloration significantly in many people.Long-term daily use seems to have the greatest effect.ark circles and puffiness are often attributed to lack of vitamin K or inadequate antioxidants. Also, a deficiency in B12 (usually anemia-related) can result in dark circles. 1  Eat plenty of fruits and vegetables, especially cabbage, spinach, and other leafy green vegetables.