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So, when hormonal contraceptives stop ovulation, an egg is not released from the ovary. With no egg for the sperm to join, pregnancy is prevented. Illustration by Ellen Lindner for Verywell Health How Does Birth Control Stop Ovulation? Illustration by Ellen Lindner for Verywell Health These two hormones will begin to be produced if your body notices a shortage of estrogen and progesterone. Rather than affecting your hormones, non-hormonal methods work by blocking sperm from effectively reaching the uterus....

But is it safe to skip a period? The short answer is yes, in most cases. An IUD can remain in place and be effective for years. Mindful Media / Getty Images There are two types of IUDs: hormonal and nonhormonal. Hormonal IUDs continuously release a tiny amount of the hormone progestin to prevent pregnancy. Many people who use hormonal IUDs find their periods become shorter and lighter. In the United States, there are four types of hormonal IUDs approved for use....

The effect of Botox is temporary, typically requiring repeat injections every 12 weeks. This was statistically significant compared to the placebo (inactive treatment) group. How Does Botox Work? Ricardo Mendoza Garbayo / Getty Images Botox is derived from theClostridium botulinumbacterium. Therefore, the recommended treatment schedule is every 12 weeks, equivalent to four treatments yearly. Undergoing Botox injections is a relatively quick procedure, lasting around 20 minutes. Most people can return to their daily activities immediately afterward....

Breast cancer does not usually hurt. Breast painis more likely due to hormone fluctuations from puberty, menstruation, pregnancy, or menopause. Other reasons your breast may hurt include fibrocystic breast changes or medication side effects. Illustration by Jake Shi for Verywell Health This article discusses breast cancer and breast pain. It explains common symptoms of breast cancer and other reasons why your breasts hurt. Illustration by Jake Shi for Verywell Health...

Some types ofbronchitiscause a low-grade fever. Acute bronchitis is inflammation sparked by an underlying infection, like a cold or the flu. Acute bronchitis can cause a fever. ljubaphoto / Getty Images Chronic bronchitis, however, is inflammation that builds over time, most often due to smoking. If you have chronic bronchitis, youre unlikely to have a fever. ljubaphoto / Getty Images When Can Bronchitis Cause a Fever? How Long Could a Fever From Bronchitis Last?...

Cancercells may cause body odors, but not odors that most people will notice. This article discusses why cancer has an odor and how it can be detected. It will also discuss changes in body odors from the cancer treatment itself. Westend61 / Getty Images Westend61 / Getty Images What Causes Cancer Odors? Scientists are still trying to determine exactly what causes cancer to have a smell. These VOCs are byproducts of some biological processes in the body....

An estimated 65% of people undergoing classic chemotherapy experience hair loss, or what doctors callalopecia. It often depends on the pop in of chemo drug, the dosage, and your individual susceptibility. Why Does Chemotherapy Cause Hair Loss? FatCamera / E+ / Getty Images While chemotherapy drugs can be effective in killing cancer cells, they also damage normal cells that divide rapidly. This includes: Keratinocytesare cells in the hair follicles that help produce hairs....

Whether chocolate causes acne has been studied extensively. Some researchers find no connection. Others who evaluated diets see a link between chocolate and acne, along with other foods likedairy productsandoily foods. Jose Luis Pelaez Inc / Blend Images / Getty Images Flavonoids are found in dark chocolate.So what’s the truth about chocolate? This article discusses acne and whether or not eating chocolate contributes to your skin problems. Foods to avoid can include:...

All of us once had a hole in our heart. Blood flows very differently through the body of a fetus compared to an adult’s. From then on, the blood flows in a pattern common to almost all adults. ADAM GAULT / SPL / Getty Images This is actually pretty common and has been said to affect about one in five people. Some physicians, however, believe that a PFO can increase therisk of stroke....

Statistically, women appear to have asthma more than men. Coffee is one of the most popular beverages across the globe. Caffeine and othermethylxanthinesfound in coffee are weakbronchodilators.Bronchodilators relax the smooth muscle in the airways. Boy_Anupong/ Getty Images You may still feel the effects of caffeine four to six hours after consuming it. Because caffeine has a temporary effect on the lungs, test results may look better than they actually are....

If you havearthritis, you might find that your joint pain is worse in the winter months. Healthcare providers and people with arthritis agree that cold weather could make arthritis pain worse. But the research connecting arthritis and colder temperatures isn’t clear. dragana991 / Getty Images Further, no research or evidence has found that cold weather can cause arthritis. The main symptoms of arthritis are swelling, tenderness, and stiffness of one or more joints....

It’s possible to have a sore throat from COVID-19. When a sore throat occurs, it tends to happen during the early part of the infection. A sore throat isn’t always a sign of COVID-19, though. AnnaStills / Getty Images AnnaStills / Getty Images What Does a COVID-19 Sore Throat Feel Like? How Common Is It? On the flip side, experiencing the loss of taste increased the likelihood of COVID-19 by almost 22-fold....

Creatine alone does not cause acne or other skin issues. Creatine is a naturally occurring amino acid found in foods or taken as a supplement. It is used to improve physical performance and enhance workouts. Tatiana / Getty Image Tatiana / Getty Image Does Creatine Cause Acne? There is no research to indicate that creatine causes acne. It can also protect against the sun’sultraviolet (UV) damage. Ingredients in nutritional supplements may cause acnefor example, whey....