Most girls go through menarche and are then able to become pregnant and bear children. This generally requires internal fertilization of her eggs with the sperm of a man through sexual intercourse, though artificial insemination or the surgical implantation of an existing embryo is also possible (see reproductive technology). The study of female reproduction and reproductive organs is called gynaecology.
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All in all, the findings suggest that the search for optimized health and nutrition — with all of its calorie counting and macronutrient obsessing — may be making things more complicated than its needs to be. “For literal decades, we have been squandering years from lives and lives from years for failure to use what we truly do know,” Katz says. “It’s tragic that we’ve let it lie fallow all this time.”
Your New Year's resolution diet should be based on a well-balanced eating plan that fits your lifestyle, rather than a weird fad replete with food restrictions. That's according to U.S. News & World Report's best diet rankings for 2018. The two diets that tied for the top spot -- the Mediterranean Diet and the DASH Diet -- fit that bill because they feature real food and reasonable, flexible guidelines, experts said.
The high-fat, low-carb ketogenic diet isn't just touted as a way to help you lose weight; research has also shown that it may be an effective tool for keeping your mental health in check. Laboratory rats fed ketogenic diets — which consist of lots of fish, natural fats, plenty of vegetables, and very few starchy, high-carbohydrate foods — showed improvements in their depression, anxiety, and ADHD.
The best low-cal diet plan isn't a diet so much as it is a method. CICO stands for "calories in, calories out" and is based on the mathematically sensible principle that as long as you're burning more calories than you're eating, you'll lose weight. All you need to get started is a way to track your calories—there are plenty of apps on the market although a pen and paper works great too—and a food scale to keep you honest about your portion sizes. (Also read this guide on how to safely cut calories to lose weight.) People love the simplicity and straightforwardness of the plan. And while it may not be the fastest way to lose weight, you're guaranteed to have success long term. (Just know that some weight-loss experts actually don't recommend calorie counting.)