This diet was most likely not developed by nutrition experts. One web site that offers the diet includes this warning: “Neither the staff nor management of 3 Day Diets are experienced, licensed, or knowledgeable to judge or recommend the validity or safety of this diet. We do not necessarily endorse this diet and recommend that before trying this or any other diet to consult a physician or licensed medical practitioner. Use at your own risk.”
In our eat-and-run, massive-portion-sized culture, maintaining a healthy weight can be tough—and losing weight, even tougher. If you’ve tried and failed to lose weight before, you may believe that diets don’t work for you. You’re probably right: some diets don’t work at all and none of them work for everyone—our bodies often respond differently to different foods. But while there’s no easy fix to losing weight, there are plenty of steps you can take to develop a healthier relationship with food, curb emotional triggers to overeating, and achieve lasting weight-loss success.
Eat at least 1g of protein per pound of bodyweight, daily. If your protein intake is too low on a restricted-calorie diet, you'll lose a lot of muscle in addition to any fat you're lucky enough to shed. A high-protein intake will help you preserve lean mass during your dieting phase. Choose lean, high-quality proteins like egg whites, poultry, lean red meat, and protein supplements. The diet provided here contains about 220-250g of protein daily, fine for a male weighing 200-250lbs. Up your protein only if you're heavier than 250lbs, or you're very hungry and need to add food during the day. Juge suggests an additional protein shake for an easy quick fix. (If you're under 180lbs, cut out 3oz of meat or chicken per day from the diet.)

When you're eating to protect your ticker, researchers have realized that it isn't about clearing your fridge of all fat, but rather focusing on the right type. "Choosing foods with omega-3 fatty acids and mono- and poly-unsaturated fats can help lower blood pressure and cholesterol even more than limiting the cholesterol you eat," says Penny Kris-Etherton, PhD, RD, a professor of nutrition at Penn State University.
This meal replacement plan has mixed scientific evidence to support it. SlimFast promises a reasonable one- to two-pound loss per week, but you’ll need to buy its shakes, bars, and other products. The 1,200-calorie plan allows for one 500 calorie meal of regular food daily, with the rest of the calories made up of SlimFast products, fruits, and vegetables. The hard part will be sticking with the program; also, the SlimFast foods contain a lot of processed ingredients and artificial sweeteners. This isn’t for people younger than 18, or pregnant or breastfeeding women without medical supervision. Make the most of your one meal with 11 simple swaps that lead to dramatic weight loss.
Many diets, including Atkins and the keto diet, fit into this umbrella. A typical low-carb diet limits carbs to less than 60 g daily, but this can vary, according to the Mayo Clinic. (15) In a September 2015 review published in PLoS One, people following low-carb diets saw modest weight loss — although study authors note that long-term effects of the diet require further research. (16)
Obviously, it’s still possible to lose weight on any diet – just eat fewer calories than you burn, right? The problem with this simplistic advice is that it ignores the elephant in the room: Hunger. Most people don’t like to “just eat less”, i.e. being hungry forever. That’s dieting for masochists. Sooner or later, a normal person will give up and eat, hence the prevalence of “yo-yo dieting”.
This diet was most likely not developed by nutrition experts. One web site that offers the diet includes this warning: “Neither the staff nor management of 3 Day Diets are experienced, licensed, or knowledgeable to judge or recommend the validity or safety of this diet. We do not necessarily endorse this diet and recommend that before trying this or any other diet to consult a physician or licensed medical practitioner. Use at your own risk.”
Portion control is another key element of weight loss. Part of the process is understanding an actual serving size. Measuring high-calorie ingredients will help you learn to eyeball portions. Even calories from healthy foods add up. “One of the foods people love are healthy fats, which are great,” Amari Thomsen, MS, RD, LDN, dietitian, and founder of Eat Chic Chicago says. Your definition of a handful of nuts might be four times bigger than an actual serving size, she warns.
“Intermittent fasting can be really challenging if you have an ever-changing schedule,” adds Hultin. “If you're traveling and crossing time zones, it could be very difficult to follow. It might be best for people with more stability in their lives.” Intermittent fasting isn’t safe for people with type 2 diabetes, children, pregnant or lactating women, or anyone with a history of an eating disorder.
There’s a large spectrum of where people can fall on a vegetarian diet: For example, vegans consume no animal products, whereas ovo-lacto vegetarians eat both dairy and eggs. The eating style may help with weight loss, suggests a review published in August 2017 in Nutrients, but some vegans and vegetarians may become deficient in specific nutrients, such as calcium, iron, zinc, and vitamin B12, according to an article published in December 2017 in Nutrition, Metabolism and Cardiovascular Diseases. (23,24)
Ready to step it up with your Fitbit tracker and set some new health and fitness goals? That’s awesome! Cue the fireworks! But if your ultimate goal is to lose weight, unfortunately, activity alone isn’t going to get you there—you also have to change what you eat. That does not mean you need to do a cleanse or detox. But it is possible to get a jump on weight loss, the smart and healthy way. Fitbit Dietitian Tracy Morris developed this kickstart one-week meal plan to help her clients see results, fast. Disclaimers: Please don’t try to lose more than 2 pounds per week, or dip below 1200 calories per day, which can compromise your metabolism. This is not a long-term plan, so you definitely don’t want to eat this way every week. But it’s a great way to kick off a weight loss goal, with specific meal and snack ideas, so you’ll see an initial drop—and be extra motivated to keep the momentum going this year. Increase your drive to succeed, and see how many consecutive days your can stay on track, by using Fitbit’s food logging feature.
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