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references Journal of Clinical Gynecology & Obstetrics: “The Effects of Ascorbic Acid on the Estrogen/Progesterone Levels in the Isolated Rabbit Uterine Muscle” Mayo Clinic: “Vitamin C” Office of Dietary Supplements: “Iron” BioMed Research International: “Herbal Medicine for Oligomenorrhea and Amenorrhea: A Systematic Review of Ancient and Conventional Medicine” U.S. Food & Drug Administration: “FDA 101: Dietary Supplements” PLOS ONE: “Lifestyle and Prevalence of Dysmenorrhea Among Spanish Female University Students” U....

Vitamins may cause hives if you have an allergic reaction. Image Credit: Ls9907/iStock/Getty Images Vitamins can cause hives if you have an allergic reaction to one or more of the ingredients in the vitamin supplement. Some people can develop an allergic reaction to the vitamin itself, but is very rare. Anytime you take a new supplement or medication, there is an increased risk of having an allergic reaction. If hives develop after you take a vitamin supplement, call your doctor for further assessment....

Celine Dion's diet is not as simple as salad and sushi. Image Credit: Kristy Sparow/Getty Images Entertainment/GettyImages Celine Dion is a veritable powerhouse on stage — and to keep energy levels up for her passionate performances, the artist knows she needs to fuel her body the right way. It turns out the French-Canadian singer has a very healthy appetite, and her go-to favorite foods might surprise you. Advertisement The 50-year-old has faced her fair share of disapproval over her slim physique, but Dion has always confidently shut the critics down, revealing that her figure has much to do with her genes....

Longer rests between sets encourage greater muscle growth. Image Credit: swissmediavision/E+/GettyImages Lean muscle is a broad term that’s used when you talk about body composition. Both aesthetically and for overall health reasons, it’s a good thing to have a lot of lean muscle compared to fat. When you strength train to build muscle, you can either build lean muscle or “bulky” muscle. Advertisement What Is Muscle Tissue? Muscle tissue is made up of cells that contract and lengthen to facilitate movement of different body parts....

Many products you can buy have similar-sounding names and ingredients, but are quite different in their use and safety. Sodium bicarbonate and sodium chloride, or table salt, have the sodium atom in common. Both are used to prepare food. Both have health and household applications. The sodium atom they share, however, also means that both can negatively impact your health. Sodium Bicarbonate Sources Sodium bicarbonate is a naturally occurring chemical substance....

U.S. Navy diver shown underwater. Image Credit: Stocktrek Images/Stocktrek Images/Getty Images Navy SEALs are elite members of the United States Navy Sea, Air and Land special operations force. While trained to operate above and below water, the unit is best known for its underwater capabilities. Specialized dive equipment enables the SEALs to work effectively in ocean and fresh water combat situations. Advertisement Wetsuits Two standard wetsuits are used by the Navy SEALs....

Both diet and regular soda can affect your cholesterol levels. Image Credit: Cata N / EyeEm/EyeEm/GettyImages Over the years, cholesterol has been highly implicated in heart disease. Although many people associate meat and eggs with high cholesterol, there may be more of a connection between sugar-sweetened beverages, like soda, and diet soda and cholesterol. Advertisement Although the connection between heart disease and cholesterol has been largely misunderstood, there are some types of cholesterol, like small LDL particles, and other types of lipids, like triglycerides, that can contribute to its development....

If you're feeling hungover, exercise probably isn't the best cure. Image Credit: South_agency/E+/GettyImages When you wake up with the telltale splitting headache and debilitating nausea of a hangover, you may be willing to try nearly anything to get rid of the symptoms. Among the endless hangover “cures” out there, you may be tempted to try “sweating out” last night’s alcohol. Advertisement And while this theory may seem foolproof, there's no actual evidence that supports exercise as a hangover cure — and in fact, it may leave you worse off....

A child's hand reaches into a bowl of popcorn. Somehow over the years, popcorn has been linked to constipation by a number of people. But a good look at the dietary information of popcorn will show that it actually contains a decent amount of fiber and is often recommended as a food for people who are constipated. Advertisement Fiber The importance of fiber in a diet has been well established by nearly all of the leading health organizations....

If the resistance isn't working, check the power source on your elliptical machine. Image Credit: ER09/iStock/Getty Images An elliptical machine offers one or two options for increasing the intensity of your workout: pedal resistance and incline ramp. Most elliptical machines offer varying levels of manually or digitally adjustable pedal resistance. If the pedal resistance on your elliptical machine stops working, try troubleshooting the problem before calling the manufacturer or a repair person....

Walking is a great exercise after myomectomy. Image Credit: Javier Snchez Mingorance / EyeEm/EyeEm/GettyImages Physical activity is important for your overall health and all healthy adults should avoid inactivity. However, sometimes you might need to take a break from regular exercise. Advertisement Health conditions, illnesses, surgeries and postpartum period are examples of times you need to avoid moderate to vigorous physical activity. Myomectomy is a surgical procedure that requires a certain recovery time....

During your golden years, stay physically active to prevent weight gain in your stomach. Image Credit: kali9/E+/GettyImages With menopause, you start to notice something occurring. The fat that used to migrate toward your hips and thighs takes a detour, settling now in your belly. What’s to blame? Advertisement Lowering estrogen levels reports ACE Fitness. Combine this with a natural loss of muscle mass that occurs as you age, and you may find you carry more of a spare tire than you did in your younger years....

Body temperature that is too high may result in heatstroke. Image Credit: nandyphotos/iStock/Getty Images Exercise helps relieve feelings of anxiety and stress and often leaves most people feeling exhilarated and refreshed. Exercise may also cause you to feel hot and sweaty and in slight pain. If you experience a fever and/or aches and pains after a workout, drink plenty of water and take a break. Stretch out achy muscles as well....

Carefully considering menu options before ordering could mean the difference between an enjoyable meal and a hospital visit. Image Credit: Jack Hollingsworth/Photodisc/Getty Images Consumer satisfaction is the key to a restaurant’s success. To maintain customer satisfaction, restaurants must be able to serve the foods that customers want to eat, even if it means having to serve raw or undercooked foods to customers as requested. When customers order raw or undercooked food, they are often not aware that those seemingly harmless foods could have a serious impact on their health....

Sugar is one of several food components that can lead to constricted blood vessels. Image Credit: bhofack2/iStock/GettyImages Keeping your arteries less clogged will help blood flow easier through your body and keep your system in good shape, but it takes some work to stay away from those foods that narrow your arteries and possibly lead to health problems. Put these four food components on your watch list. Advertisement ​Read more:​ A Possible Downside to Herbal Supplements Video of the Day 1....

Almonds in a small white bowl on a wooden table Image Credit: Serghei Platonov/iStock/Getty Images The glycemic index is a measurement of the effect that carbohydrates have on blood sugar. Eating too much food that has a high glycemic index may impact your ability to control your blood sugar over time. Being unable to control your blood sugar could lead to conditions such as diabetes and metabolic syndrome. The good news is, almonds will not affect your blood sugar....

Types of Headaches During Pregnancy Image Credit: SHansche/iStock/GettyImages Headaches during pregnancy may not get as much attention as other pregnancy-related symptoms like morning sickness and extreme fatigue, but they are common and can take their toll on your quality of life. Knowing what to look out for can make a big difference in reducing headaches during pregnancy. Advertisement Hormones May Not Be to Blame Even if you don’t usually get headaches, you may develop lots of headaches during pregnancy....

Lotus tea has been used for its health benefits for thousands of years. Image Credit: dotuyet/iStock/Getty Images Lotus tea has been used for its health benefits for thousands of years. From antioxidant properties to acne-fighting effects, the sweet-scented lotus flower, along with the leaves, stem and root, a popular cooking ingredient, tout a number of advantages. Advertisement Overview on the Lotus Flower Nelumbo nucifera, known as the lotus, is a plant in the Nymphaeaceae family....

Even if you're nervous about carbs, you can create a healthy sandwich or wrap that fits your eating plan. Image Credit: myasinirik You shouldn’t have to fit into a diet and fitness plan. The plan should have to fit you. Click here for all the details on our January challenge. If you build it properly, a sandwich is really just a salad between two slices of bread. Both can deliver protein, healthy fats and lots of veggies....

Some brands of peanut butter contain large amounts of added salt, sugar and hydrogenated oils, which you should avoid. Image Credit: AlexPro9500/iStock/GettyImages Peanut butter is a staple food in the diets of many bodybuilders. Although it’s nutrient dense and packed with healthy fats and protein, it’s also very high in calories. The amount of peanut butter you should eat depends on several factors, such as your goals and your current level of performance....