Well, we certainly saw some jolts during the July general kernel update (especially towards the end of the rollout). Here are two examples of sites seeing changes starting around 09/07. Is there a doctor in the house? E-Commerce Photo Editing A reminder that Google's algorithms can be more critical of medical content:With many general updates, there can be a lot of volatility on sites categorized as your money or your life (YMYL). And within that category, health and medicine can often see a lot of movement. Google publicly explains that its algorithms are more critical with medical and health content (for obvious reasons).
Here's a tweet I shared based on a video of Google's John Mueller explaining more about health and medicine. And here is a direct link to the video if you want to watch it now (from 8:25 p.m. in the video): Well, I've seen some really big swings on some health and medical sites with the June and July updates. Some sites have undergone huge changes in search visibility… Note that it is impossible to know exactly what Google has changed as there are so many factors being evaluated. In my opinion, you will rarely be able to isolate specific changes to Google's algorithms (for general kernel updates).
It's more important to keep improving your site as a whole, and I'll cover the "kitchen sink" approach to fixing later in this article. For example, here are some examples of big visibility changes for health/medical sites:Take the money and run. E-Commerce Photo Editing Also a lot of volatility on some financial sites. While we're talking about YMYL content, I've also seen a lot of big swings in search visibility on finance-focused sites. Since these sites are considered YMYL, Google's algorithms keep them higher.