The alkaline diet is another trend that you don’t have to worry about.

It is critical for health that the pH of your blood remains constant. For this reason, the body has many effective mechanisms to closely regulate the pH balance in your body. This is known as Acid-Base Homeostasis.

Fortunately for us, these mechanisms make it near impossible for outside influences to change the pH value of the blood. If that wasn’t true, we would surely be in trouble. The fact is… food simply can not change your blood pH. Period.

Eat alkaline foods (i.e. real, unprocessed food including vegetables and greens) because they are nutritious and taste good, but don’t feel guilty about acid foods (i.e. meat, grains) that you enjoy. It appears that there’s no current scientific evidence to support that the alkaline/acid balance of your diet causes cancer or osteoporosis.

https://www.healthline.com/nutrition/the-alkaline-diet-mythThe Alkaline Diet: An Evidence-Based Review