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People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

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A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

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Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Diagram of the Twenty Essential Amino Acids Diagram of the Twenty Essential Amino Acids
Nucleic acids Nucleic acids
Nucleic acids: RNA Nucleic acids: RNA
Basic Amino acids Basic Amino acids
Proteins Are Made of Amino Acids Proteins Are Made of Amino Acids
Visualization of nucleic acids and proteins in electrophoresis gels Visualization of nucleic acids and proteins in electrophoresis gels
Video: Hormonal feedback loop components & Glucagon (glycogenolysis and gluconeogenesis)

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