EnglishMark_Sisson is on Twitter (X) as @Mark_Sisson, with 211,178 followers and 16,208 posts. It has been on X since November 2008, an account age of 17 years.
Engagement
Early reading. We have captured 6 original posts for this account, below the 8 we require before treating a median as settled. The numbers above describe what we have seen so far, not a finished profile of the account.
A typical post picks up 138 interactions against 211K followers, an engagement rate of 0.065%. Posts are seen about 20K times each, and 0.695% of those impressions turn into an interaction. That is about 9.37% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.37 posts a day over the last 30 days, though only 17% of days saw any activity at all.
Measured over 6 original posts from a 30-day window, last computed on October 5, 2026.
Full engagement reportFollower growth
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Bio
NYT bestselling author of The #KetoReset Diet, former endurance athlete, & founder of #MarksDailyApple, @PrimalKitchenCo & @PrimalBlueprint
Notable followers
The biggest accounts in our directory following @Mark_Sisson.
Mark_Sisson on Twitter (X) - frequently asked questions
- What is the Twitter handle for Mark_Sisson?
- Mark_Sisson posts on Twitter (X) as @Mark_Sisson. The profile is at x.com/Mark_Sisson, and the View on X button at the top of this page opens it.
- How many followers does Mark_Sisson have on Twitter?
- Mark_Sisson (@Mark_Sisson) has 211,178 followers on Twitter (X). The count is refreshed continuously from public data.
- When did Mark_Sisson join Twitter?
- Mark_Sisson joined Twitter (X) in November 2008. The @Mark_Sisson account is 17 years old. Searches for Mark_Sisson age often mean a personal age, which we do not publish. The figure here is the account age only.