The porphyrias are a group of uncommon diseases that cause either disease affecting the skin, disease affecting the nervous system, or both. Porphyria results from accumulation of porphyrins either in the skin, which results in sensitivity to sunlight, or in the liver, which results in acute attacks of porphyria. Normally, porphyrins are converted from one …
Allergies are hypersensitivities that involve reactions of the immune system to substances that do not cause reactions in most people. The substances that trigger the reaction are called allergens. Allergies affect as many as 40% of people worldwide and have become increasingly common in recent decades. Examples of potential allergens include plants, insect venoms, dander …
Glucose is the type of sugar that the cells of the human body use as their main energy source. Your body breaks down the food you eat into glucose and other substances. Your liver stores extra glucose and can produce it at times when you are not eating. The glucose goes into your bloodstream, where …