OUR resident specialist and NHS GP, Dr Zoe Williams, shares her expert advice. Today, Dr Zoe helps a reader whose weight loss has stalled. 2 Sun columnist Dr Zoe helps a reader whose weight loss has stalled Credit: Olivia West 2 There are several medical reasons why weight loss could have stopped Credit: Getty Q: I’VE lost more than 6st in the past four years by not drinking alcohol and eating sensibly.

I had got down to 18st when I had a heart attack four months ago. I am feeling a lot better but since going back to my diet, I am finding it difficult to lose weight. I am walking a lot but can’t seem to shift it.

READ MORE HEALTH NEWS SPOT OF BOTHER From bum pimples to strawberry legs – what spots reveal about your health STRESSED OUT Record number of cops signed off from work with mental health issues Could the tablets I take be affecting my weight loss efforts? A: Well done on losing so much weight so far, it’s not easy to do! As weight reduces, using the same weight-loss methods can be more challenging as your body gets smaller and you burn fewer calories. One way to combat this is to get stronger and build muscle, which burns a lot of energy, so can help to readdress that declining metabolic rate. Most read in Health 'BLOWN AWAY' I got my first erection in 27 years watching Lady Chatterley's Lover HOLIDAY HELL My girl woke up 'yellow' & vomiting as 15 of my family fell sick on 5* holiday POLL OF THE DAY How much sleep do you get each night? SPOT CHECK Little-known.