I have a question about this episode How to Prevent & Treat Colds & Flu and this Vitamin D Insights Why does Andrew Huberman take 5,000 IU of Vitamin D3 daily and sometimes increase it to 10,000 IU, while he recommends 1,000-2,000 IU in the episode How to Prevent & Treat Colds & Flu and the clip Zinc Supplementation Insights?

Andrew Huberman takes 5,000 IU of Vitamin D3 daily and sometimes increases it to 10,000 IU, primarily based on individual needs and his own vitamin D levels. In the How to Prevent & Treat Colds & Flu, he mentions that most people can safely supplement with 1,000 to 2,000 IU of Vitamin D daily, which helps maintain a safe and effective level for overall health and immune function without the risk of deficiency or excessive levels 1.

However, for some individuals, including perhaps himself, higher doses such as 5,000 to 10,000 IU might be necessary to achieve adequate Vitamin D levels. This is particularly important if their vitamin D levels are measured to be low or if they cannot get sufficient sunlight exposure. Therefore, he recommends testing your vitamin D levels to determine if a higher dose is required to reach optimal levels for both mental and physical health. High doses can be risky if levels are already sufficient, emphasizing the importance of monitoring through testing 1.