We understand your concern and the fear that your friend has shared with you. Firstly, let's address the anxiety and bring it to the Lord in prayer.
"Father, we come before You in Jesus' name, seeking Your truth and comfort. We ask that You reveal what is hidden and give wisdom to discern fact from fiction. Protect us from any harm, and help us to trust in Your care. In Jesus' name, we pray. Amen."
It's important to remember what the Scripture tells us about fear and anxiety: "Don’t be anxious for anything, but in everything by prayer and pleading with thanksgiving let your requests be made known to God. And the peace of God, which surpasses all understanding, will guard your hearts and your thoughts in Christ Jesus." (Philippians 4:6-7 WEB)
While it's wise to be conscious of what we consume, we should not live in fear. Instead, we should seek God's protection and guidance. The Bible tells us, "So whether you eat or drink or whatever you do, do all to the glory of God." (1 Corinthians 10:31 WEB)
However, we should also be mindful and responsible. If you're concerned about the quality of your food and water, consider researching reliable sources, supporting local and organic farmers, and investing in water filters. But always remember that God is our ultimate protector and provider.
Lastly, let's not forget to share the hope and peace found in Jesus with your friend. It's only through Him that we can find true peace and comfort in this world. "Jesus said to him, 'I am the way, the truth, and the life. No one comes to the Father, except through me.'" (John 14:6 WEB)