It has also changed significantly over time. Most of this extra food energy came from an increase in carbohydrate consumption rather than fat consumption. In the United States, subsidization of corn, soy, wheat, and rice through the U.
The spread of artificial lighting means most of us no longer experience truly dark nights. Research suggests that artificial light at night can negatively affect human health, increasing risks for obesity, depression, sleep disorders, diabetes, breast cancer and more.
Circadian Rhythm and Melatonin Like most life on Earth, humans adhere to a circadian rhythm — our biological clock — a sleep-wake pattern governed by the day-night cycle.
Artificial light at night can disrupt that cycle. Our bodies produce the hormone melatonin in response to circadian rhythm. Melatonin helps keep us healthy. It has antioxidant properties, induces sleep, boosts the immune system, lowers cholesterol, and helps the functioning of the thyroid, pancreas, ovaries, testes and adrenal glands.
Nighttime exposure to artificial light suppresses melatonin production.
Unfortunately,most LEDs used for outdoor lighting — as well as computer screens, TVs, and other electronic displays — create abundant blue light. To minimize harm from blue light in your home, choose the right light bulb and download a color temperature app that adapts your electronic screen to the time of day — cool light during the day and warm light at night.
Click here to learn how to use it. Twilight is available for smartphones or tablets. Be sure to look at the packaging. Use low color temperature light sources for interior and exterior light. Their light is less harsh and less harmful to human health and the environment. Look for warm white sources with a color temperature of K or lower.
The Kelvin temperature chart below shows you what the numbers mean. Kelvin Temperature Scale Higher color temperatures mean bluer light, the kind that should be avoided after dusk.
This limits our ability to see potential dangers at night. Aging eyes are especially affected.This CE course for nurses provides an overview of the relationship between obesity and asthma.
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Find science-based health information on symptoms, diagnosis, treatments, research, clinical trials and more from NIH, the nation’s medical research agency. Wellness is the search for enhanced quality of life, personal growth, and potential, through positive lifestyle behaviors and attitudes.
Certain factors influence our state of wellness, including nutrition, physical activity, stress-coping methods, good relationships, and career success. The link between asthma and being very overweight is not well understood. Does obesity cause asthma? Or are they two separate conditions that co-exists in some people?
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