Ever cut down carbs at the same time as family and friends, only to watch their pounds slip off while your waistline stays the same? Or do you often fancy a nap after polishing off a pizza? It could be down to your DNA, says genetics expert Dr Sharon Moalem, author of The DNA Restart: Unlock Your Personal Genetic Code (Rodale).
‘We have a gene called AMY1 that produces amylase, an enzyme that breaks down carbohydrates,’ explains Dr Moalem. The more copies of that gene you have,