A mom of four who lost 144 pounds (approx. 65 kg) in 15 months was mistaken for her husband’s mistress after a friend didn’t recognize her new look. At her biggest, Sarah Buchanan, from St. Austell, Cornwall, England, was morbidly obese, tipping the scales at 347 pounds (approx. 157 kg) and struggling to squeeze into an XXL size. However, the 33-year-old mother felt the need to beat the bulge when her doctor told her in August 2019 that she had diabetes and that she may need to have gastric bypass surgery. Over the next 10 months, Sarah ditched the sandwiches and unhealthy snacks and started cooking homemade meals with fresh ingredients from scratch. The overhaul of her diet saw her lose 144 pounds and slim down to 203 pounds (approx. 92 kg); she now looks almost unrecognizable to friends and family. A friend even thought Sarah’s husband, Daniel, 39, was cheating …