Adequate stomach acid is essential for absorption of the minerals zinc, magnesium, calcium, iron and folate which are essential for healthy skin.
Adequate stomach acid is necessary for the absorption of the B vitamins.
Stomach acid activates protein-digesting enzymes and is necessary for proper digestion of protein.
Adequate stomach acid is necessary for the pancreas to release its cascade of digestive enzymes for absorption of carbohydrate and fat.
Sub-optimal fat digestion means we won't benefit from the anti-inflammatory properties of omega-3 fats,nor the wide array of beneficial effects of fats for fertility, skin health, immunity, etc.
Adequate stomach acid destroys pathogens (bacteria, fungi, parasites etc) and a lack of stomach acid can lead to bad bacteria proliferating in the small intestine dysbiosis (bad bacteria) and unwanted parasites which have Health Renewal ramifications down the line.