#extreme-dieting

#extreme-dieting

Research increasingly demonstrates that healthy nutrition improves mental health, and an entirely new subspecialty has formed to support this. Nutritional psychiatry is expanding rapidly, with research growing 15-fold from 2000 to 2024, reflecting the increasing acceptance of diet's role in mental health.

When you give people a template 'produce, protein portion,' it makes it a lot easier to find healthy options that align with your goals.

Most of the carbohydrates in these foods - as well as most of the calories - come from starch, of which there are two types: hard-to-digest amylose and easily digested amylopectin. The latter is processed quickly and spikes blood sugar. The former is processed slowly and moderates blood sugar.

By following more than 100,000 people in the U.K. for years, researchers found that people whose food choices scored high in any one of five diet categories tended to live longer than people who scored the lowest. Specifically, the team found that even after adjusting for confounding factorssuch as whether people smoked, how much exercise they took and what their education and ethnicity wasstudy participants who tended to eat according to any one of the five diets were 18 to 24 percent less likely to die of any cause. For women, that roughly translated into an extra 1.5 to 2.3 years of life. And for men, it added about 1.9 to three years.

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The Dietary Guidelines for Americans aim to translate the most up-to-date nutrition science into practical advice for the public as well as to guide federal policy for programs such as school lunches. But the newest version of the guidelines, released on Jan. 7, 2026, seems to be spurring more confusion than clarity about what people should be eating. The latest dietary guidelines, published on Jan. 7, 2026, have received mixed reviews from nutrition experts.

Rather than simply extending the fasting window or cutting more calories, the intervention group was simply asked to finish eating at least three hours before their usual bedtime. That meant no snacking while watching TV after dinner and no "just one more bite" at 10 p.m. (my personal downfall). This relatively simple intervention ensured that the overnight fast overlapped with the body's natural sleep-wake rhythm.

We are in the midst of a high protein craze. Every week I get dozens of protein-packed pitches to my inbox, and I'm sure you've seen the protein bars plastered all over subway cars, protein-ified menu items at fast-casual chains like Starbucks and Sweetgreen, and protein versions of classic products (protein pasta, protein crackers, protein...yogurt?) lining practically every aisle at the grocery store.

January might be coming to a close, but the focus on wellness doesn't have to die with it. If anything, it's a good time to check in with those 2026 goals and see what you want to prioritise for the rest of the year. To that end, we've gathered some of the best deals we've seen in the past few weeks that will help you tick off every good intention you set this month.

There are also clear downsides to the diet. Ketones are acidic, and if they build up too much in the blood, they can be toxic, causing ketoacidosis. This is a particular concern for people with type 1 diabetes and for people with chronic alcohol abuse. For everyone else, there's a list of common side effects, including nausea, vomiting, constipation, diarrhea, bad breath, headache, fatigue, and dizziness. Ketogenic diets are also linked to high cholesterol and kidney stones.

We compared how participants fared while eating their habitual diets with how they responded to the two diets that were low in ultraprocessed foods. During the periods when participants ate fewer ultraprocessed foods, they naturally consumed fewer calories and lost weight, including total and abdominal body fat. Beyond weight loss, they also showed meaningful improvements in insulin sensitivity, healthier cholesterol levels, fewer signs of inflammation, and favorable changes in hormones that help regulate appetite and metabolism.

Rachel Swanson, a registered dietitian at LifeSpan Medicine and author of "Trying!: A Science-Backed Plan to Optimize Your Fertility," splits her time between New York City and Miami, spending about half the year in each. She also takes small-group workout classes three times a week, focusing on strength training. She says eating enough nutrients, especially protein for muscle-building, is crucial for her. She generally aims for around 0.7 grams of protein per pound of body weight, the protein intake usually recommended for physically active people.

When we say we want to lose weight, we typically mean shedding fat but not muscle. Muscle helps us to look "toned" and supports our metabolism. To lose fat without losing muscle, eat enough protein and strength train regularly, two top trainers said. If you want to lose fat without losing muscle, there are three things you need to know.

Dr Ian K Smith believes that we need to revolutionise our approach to ageing, adapting our health and dietary practices to suit where we are now