Use standard React patterns like useEffect or data fetching libraries:

import { useState, useEffect } from 'react';

function Profile() {
  const [user, setUser] = useState(null);
  const [loading, setLoading] = useState(true);
  
  useEffect(() => {
    fetch('/api/user')
      .then(res => res.json())
      .then(data => {
        setUser(data);
        setLoading(false);
      });
  }, []);
  
  if (loading) return <div>Loading...</div>;
  
  return <div>Welcome, {user.name}!</div>;
}