Does a diet in myocarditis affect also?

Yes, you must need to use diet, as for avoiding additional loading on the heart, these are limiting of salts and liquids, and adding milk products of curd, kefir, milk, and dishes of theirs are curd snacks, baked puddings, fatness veal, lard, beef, rabbit meat, bird, liver, fish, fresh vegetables are beet, potato, cucumbers, aubergines,cauliflower, squashes.
Greens, fruits, berries are kisels, compotes, weak tea, barley, buckwheat, oats, pearl, dried fruits, hibiscus, prunes, dried apricots, and meat,fish are boiled,slightly fried on top, if myocarditis not allergic, and eggs in dishes using just where they are needing, or cook omelet stewed, vegetarian soups, rare using concentrated broth.