Understanding Sun Protection Factor SPFstands for Sun Protection Factor. This article explains what SPF numbers mean. It discusses how SPF is measured and how to determine the right level of protection for your skin. Verywell / Ellen Lindner It also offers advice for other ways to protect your skin from UV damage. A higher SPF value increases your protection, but it’s not a straightforward mathematical equation. SPF measures the quantity of UV radiation, not exposure time....

Thesplenius capitisis a deep muscle located on the upper back. What Is the Splenius Capitis? It’s important for maintaining good posture because it helps keep the head in a neutral position. SCIEPRO / Getty Images This muscle inserts at thenuchalligament, a very strong ligament of the neck. The splenius capitis muscle then angles up and out to attach to your skull. The splenius muscles serve to hold these deeper layers in position....

It produces hormones that help control your heart and digestive system. In infants, thyroid hormones help the brain and bones develop. The thyroid produces and releases two major hormonesthyroxine (T4)andtriiodothyronine (T3). Verywell / Jessica Olah Roughly 10 times that amount of T4, about 1000 mcg, is constantly circulating in your blood. The remainder is converted toreverse T3(rT3)by cleaving off an iodine atom from a different location. The thyroid’s active hormone is T3, while rT3 is completely inactive....

Throat cancer symptoms often include visible sores, a swollen tongue, and lumps in the throat or neck. Leukoplakiasores are premalignant lesions, which means theyre not cancerous yet but could develop into cancer. Most cases are benign and some go away on their own, but others will progress to become cancer. Illustration by Katie Kerpel for Verywell Health This photo contains content that some people may find graphic or disturbing. They often are linked to tobacco and alcohol use....

Seeing undigested food in your stool can be troubling. While it is often harmless, it can sometimes signal a more severe problem. Learning the difference can help you know when to seek treatment. Rattankun Thongbun / Getty Images Undigested food in your stool can occur after havinghigh-fiber foodsor eating too fast. However, it can also signify agastrointestinal (GI) diseasethat hinders normal digestion. This article explains how undigested food in your stool occurs and its causes....

Laura Porter / Verywell Boosts Collagen Vitamin C is absolutely essential for producing collagen in the body. As we age, collagen production slows down, which may lead to sagging skin. Reduces Hyperpigmentation Vitamin C may help improve skin complexion by reducing the appearance of dark spots. Laura Porter / Verywell Although harmless, hyperpigmentation can lead to an uneven skin tone. This causesphotoaging(or premature aging). That said, it’s not surprising that poorwound healingis a common symptom of a vitamin C deficiency....

In contrast, classic HFMD affects the hands, feet, mouth, and sometimes the buttocks or limbs. EC is highly contagious but usually resolves without serious complications. SBenitez / Getty Images Symptoms Eczema coxsackium causes a rapidly spreading rash that may initially resembleeczema. SBenitez / Getty Images It typically appears in areas previously affected by eczema but can also develop elsewhere. While oral ulcers can occur with EC, they are far more common in classic HFMD....

The efficiency at which it does this is called thebasal metabolic rate(BMR). Thyroid Hormones The thyroid is controlled by the brain’spituitarygland. This gland producesthyroid-stimulating hormone(TSH), which signals the thyroid to produce hormones. Research on the relationship between thyroid hormones and weight gain has returned slightly different conclusions. However, most studies have found that in people with obesity, levels of T3 are generally high. Treatment usually returns body weight to what it was before the disease....

Read on for more information on what they mean and how they’re used in medical research. One more term from epidemiology you should know ispopulation. Epidemiologists study specificpopulationsof people. Vadym Petrochenko / Getty Images For example, they might study adults who live in the U.S. as a specific population. Incidence vs. Incidence tells you how many people were diagnosed with a particular disease in a particular population of people. That means about one in every 141 people ages six and older in the United States has celiac disease....

Traditional medicine has usedC. asiaticafor centuries to treat skin conditions and help with wound healing. Cosmetic products and supplements containingC. Guido Mieth / Getty Images asiaticaare becoming increasingly popular due to the plants potential benefits for skin health and cognition. As a result, some supplement products may not contain the ingredients listed on the label. Potential Skin Benefits and More Centella asiaticais commonly known for its use in skincare. It is particularly valued for its ability to support skin health, wound healing, and collagen production....

Hemorrhoids, also known as piles, are swollen or inflamed veins in your rectum or anus. They develop from increased pressure on the skin in and around the anal area.Hemorrhoids can be internal or external. External hemorrhoids can be the most painful. Ijubaphoto / Getty Images They form under the skin around your anus. They can causeanal itchingand swelling when the skin around them is irritated. Most external hemorrhoids resolve on their own, with or without treatment....

The anterior cul-de-sac is a pouch that sits between the bladder and the uterus. The posterior cul-de-sac sits between the uterus and the rectum. This latter cul-de-sac is also known as the pouch of Douglas, named for the Scottish physician James Douglas. Verywell / Jessica Olah Sometimes aruptured ovarian cystor follicle leaks fluid. Sometimes there’s a more severe problem. If your healthcare provider suspects you have OHSS, they may suggest an ultrasound to check for fluid....

Over time, too much of these fats increase the risk ofhigh cholesteroland heart disease. Some foods high in saturated fat may already be on your radar, like beef or cheese. This article reviews the types of foods high in saturated fat. Andrew Unangst / Getty Images It also covers healthier alternatives to choose from instead. How Much Saturated Fat Should You Eat? you could also choose “lean” or “extra-lean” meats....