You should contact your GP before starting a calorie deficit if you: Have a body mass index (BMI) below 18.5 kg/m or above 40 kg/m, or a BMI of 35 kg/m or more with obesity-related health conditions (such as type 2 diabetes or high blood pressure) Are pregnant, breastfeeding, or planning pregnancy Have existing medical conditions such as diabetes, cardiovascular disease, eating disorders, kidney disease, or metabolic conditions Take medications that may be affected by dietary changes (such as warfarin, lithium, insulin, or sulfonylurea diabetes medications) Are under 18 years of age, as nutritional requirements differ during growth and development Have previously experienced disordered eating patterns or have a history of eating disorders Seek prompt medical advice if you experience: Unintentional weight loss exceeding 5% of body weight over 36 months without dietary changes, particularly if accompanied by persistent change in bowel habit, difficulty swallowing, unexplained bleeding, persistent cough, or night sweats Persistent fatigue, dizziness, or fainting episodes Hair loss, cold intolerance, or other signs of nutritional deficiency Irregular menstrual cycles or amenorrhoea (absence of periods) in women Obsessive thoughts about food, weight, or body image that interfere with daily functioning Rapid weight loss exceeding 1 kg weekly over several consecutive weeks For individuals with obesity and related health conditions , NICE recommends a multicomponent weight management programme incorporating dietary modification, physical activity, and behavioural strategies

This dose may change as they see how your body reacts
Understanding these pathways helps contextualize concerns about tirzepatide and similar medications
A pilot study of the effects of behavioral weight loss treatment on fibromyalgia symptoms
The 63-year-old was seen by doctors at Brigham and Womens Hospital in Boston