The growth of Bitcoin's Lightning Network can reduce pressure on the main chain by offloading smaller, frequent transactions. As more users adopt Lightning for payments, fewer transactions settle directly on-chain, which can ease network congestion and potentially lower transaction fees. However, opening and closing Lightning channels still require on-chain transactions, so if adoption spikes rapidly, it may temporarily increase main chain demand. In the long term, widespread Lightning use may help stabilize or reduce fees by shifting routine activity off-chain, especially during peak periods.