My theme calls the update_meta_cache() function 58 times per page! This function appears to run the following query based on the post in question:
SELECT post_id, meta_key, meta_value -> FROM wp_postmeta -> WHERE post_id IN (81649) -> ORDER BY meta_id ASC -> ;
The vast majority of the meta_keys (and corresponding values) returned are not necessary for the page in question (e.g. yoast_wpseo_title, _edit_last, _edit_lock are not needed for the homepage loop).
Is there a way to reduce or prevent calling of the update_meta_cache? Perhaps a way to include in a function on the pre_get_posts hook?