{"id":905831,"date":"2026-05-14T08:32:22","date_gmt":"2026-05-14T13:32:22","guid":{"rendered":"https:\/\/newsycanuse.com\/index.php\/2026\/05\/14\/how-medical-creator-nick-norwitz-grew-his-substack-paid-subscribers-from-900-to-5200-within-8-months\/"},"modified":"2026-05-14T08:32:22","modified_gmt":"2026-05-14T13:32:22","slug":"how-medical-creator-nick-norwitz-grew-his-substack-paid-subscribers-from-900-to-5200-within-8-months","status":"publish","type":"post","link":"https:\/\/newsycanuse.com\/index.php\/2026\/05\/14\/how-medical-creator-nick-norwitz-grew-his-substack-paid-subscribers-from-900-to-5200-within-8-months\/","title":{"rendered":"How medical creator Nick Norwitz grew his Substack paid subscribers from 900 to 5,200 within 8 months"},"content":{"rendered":"
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By Alyssa Mercante<\/a><\/span> \u00a0\u2022\u00a0 March 12, 2026<\/span> \u00a0\u2022<\/p>\n<\/div>\n

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This article is part of an ongoing series examining successful creator business strategies. More from the series \u2192<\/a><\/p>\n

Nick Norwitz graduated from Harvard Medical School last May. By January, he had already grown his paying Substack subscribers nearly 500 percent, taking the total to 5,200, while registered readers jumped 362 percent to 42,000.<\/p>\n

Last March, he was approached for representation by creator management company Underscore Talent, which signed him into their Shorthand Studios content services to strategize and build out a team to help make his Metabolic Health YouTube channel<\/a> a \u201chousehold name.\u201d The financial terms of the agreement were not made available. <\/p>\n

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Norwitz\u2019s content breaks down metabolic health, offering actionable steps viewers and readers can take to be healthier. \u201cI wanted to position myself as someone who wouldn\u2019t just be prescribing polls, but would be providing people empowerment to take control of their health directly,\u201d Norwitz told Digiday, who is now working as a full-time creator.<\/p>\n

Within a few months of working directly with Shorthand\u2019s vp of creative strategy, Zack Evans, Norwitz began A\/B testing thumbnails and video titles, and aimed to consistently upload two videos a week. They also reworked the metabolic health branding, and the combined results led to some major viewing boosts. Norwitz\u2019s channel, which features mid-length videos usually between 15-20 minutes, has increased views 442% and watch time by 151%. His subscribers have gone from 170,000 to 870,000.<\/p>\n

\u201cI\u2019m definitely unique as a content creator because of the nature of the content I produce,\u201d Norwitz said. \u201cThe expertise Shorthand has brought in is fantastic, they\u2019re melding with mine\u2026 and we\u2019ve seen the results.\u201d<\/p>\n

The YouTube channel had proved the audience was there. The question was how to monetize it beyond ad revenue. The answer was Substack \u2014 and a strategy built around three researched medical letters a week published under the Stay Curious Metabolism Substack. In July 2025, Norwitz in partnership with Shorthand, added 382 paid subscribers. In August, 533. In the months before, he\u2019d only cracked double digits twice since launching the Substack in June 2024. His YouTube channel spent five years building the funnel. It took one focused summer to turn it into a business.<\/p>\n

Norwitz would not share how much he\u2019s making on YouTube or Substack \u2014\u00a0or what exact revenue figures they have grown to.<\/p>\n

The mechanism was straightforward: every YouTube video became a signpost, directing his 870,000 subscribers toward a Substack where the deeper analysis lived behind a paywall.<\/p>\n

\u201cEvery category on Substack that isn\u2019t politics is ripe for disruption,\u201d said Shorthand\u2019s head of paywall, Fadi Saleh. And because his content was rooted in science and health, he\u2019d built trust within an audience \u2014 which in turn helped pull YouTube viewers onto Substack and convert them into subscribers.\u00a0<\/p>\n

Within eight months, the Stay Curious Metabolism Substack paid subscriber count jumped from 900 to 5,200, while free subscribers have increased from 9,100 to 42,000. It\u2019s become the number three best-selling science publication on Substack, and 1-year subscriber retention has increased to 80%.<\/p>\n

The Substack bump<\/h2>\n

Shorthand\u2019s head of paywall, Fadi Saleh, knew the subject of his content (science) was poised to perform well on the platform and that the platform\u2019s data would help them build a scalable strategy.<\/p>\n

\u201cSubstack is one of the few platforms that gives you so much useful data, so it was my job to come in and to really unpack that data and unpack the patterns we were seeing around what was performing and what was not,\u201d said Shorthand\u2019s head of paywall, Fadi Saleh, told Digiday.<\/p>\n

When it came time to strategize, Saleh focused on four big buckets: content strategy, marketing strategy, content optimization, and positioning.<\/p>\n

\u201cHis non-generic knowledge and actionability works really well as a paid offering,\u201d Saleh said.<\/p>\n

They worked on increasing conversions from his social media accounts, closing gaps they identified in driving YouTube subscribers to Substack by suggesting phrases and places to mention the platform in his videos. Today, between 20 and 30 percent of his Substack conversions come from Norwitz\u2019s other social media platforms. \u201cA big chunk of that is from YouTube,\u201d Saleh said, without revealing specifics.<\/p>\n

Shorthand also audited his newsletter, and identified content that worked best (heart health, longevity, and brain health) and determined how to maximize conversion by positioning paywall breaks at optimal points, A\/B testing titles, and even occasionally suggesting rewrites.\u00a0<\/p>\n

\u201cWhere we really helped Nick was making his positioning crystal clear. I think a lot of creators underrate this,\u201d he explained. \u201cIn terms of paywall, you have to say the same thing over and over in terms of what the value proposition is and what subscribers are getting out of it \u2014 far too many are still in that \u2018support me\u2019 model.\u201d<\/p>\n

Shorthand reworked the Stay Curious Metabolism\u2019s \u201cabout\u201d section, onboarding emails, and the upsell before the paywall break. \u201cWe say the same thing in every one of his letters: Premium subscribers get full access to my deep dives into cutting-edge metabolic research for less than $1 a letter, three times per week. You\u2019ll always walk away with at least one new insight about metabolic health,\u201d Saleh said. \u201cI can\u2019t think of a way to make that more clear.\u201d<\/p>\n

With this strategy, Norwitz\u2019s Substack has grown immensely in just eight months. \u201cWhatever we\u2019re doing is working,\u201d he said. <\/p>\n

The plan is to keep that growth going, while also looking to expand Norwitz\u2019s reach.<\/p>\n

\u201cIt isn\u2019t just about building a YouTube channel, it\u2019s about building a multimedia brand, which requires not just creating good videos, titles and thumbnails, but coordination across media ecosystems,\u201d Norwitz said.<\/p>\n<\/div><\/div>\n

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\n More in Media<\/span>
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Read More<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

By Alyssa Mercante \u00a0\u2022\u00a0 March 12, 2026 \u00a0\u2022 This article is part of an ongoing series examining successful creator business strategies. More from the series \u2192 Nick Norwitz graduated from Harvard Medical School last May. By January, he had already grown his paying Substack subscribers nearly 500 percent, taking the total to 5,200, while registered […]<\/p>\n","protected":false},"author":1,"featured_media":905832,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1275,3850,104640],"tags":[],"class_list":{"0":"post-905831","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-creator","8":"category-medical","9":"category-youtube-videos"},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/posts\/905831","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/comments?post=905831"}],"version-history":[{"count":0,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/posts\/905831\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/media\/905832"}],"wp:attachment":[{"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/media?parent=905831"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/categories?post=905831"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/tags?post=905831"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}