Heading is repeated

I have a products section that's divided into Departments > Categories > Subcategories > Products. http://healthyfoodsandmore.com/departments.php

If you choose one of the Categories - e.g. Supplements - you'll see a page that lists all of the subcategories; e.g. http://healthyfoodsandmore.com/departments-subcategories.php?main_category=3. There are currently five subcategories - Vitamins & Minerals, Homeopathic, etc. The heading shows the Category - Supplements - five times, presumably because of the number of products. How do I get this so the Category heading only appears once?

This is the code I'm using:

<?php foreach ($departments_subcategoriesRecords as $record): ?>
<?php echo htmlencode($record['main_category:label']) ?>
<?php endforeach ?>

Thanks!