Sportswear retailer JD has lowered its profit outlook as rising living costs, intensified by the US conflict with Iran, reduced demand for trainers. JD Sports, which stocks major athletic labels such as Nike and Adidas, said broad-based inflation had squeezed household finances. This contributed to weaker sales in key regions, including the US, where the retailer found it difficult to clear trainers and other footwear quickly. Executives also warned that subdued consumer spending was likely to