Arguement for taking Vit D

Do read his Wikipedia page.

Note that he was a nurse, not a (medical) doctor.

Although he was highly praised for his videos at the beginning of COVID, this certainly hasn't been the case more recently, where he's been criticised for misleading information.

I think I listened to his Vitamin D video some time ago and found it good though.

For some cancers, some centres tell patients to stop taking Vitamin D during radiotherapy, because it's an anti-oxidant, whereas the whole object of radiotherapy is to create free radicals to corrupt DNA, which is what anti-oxidants are trying to avoid. I've never heard this advice given to prostate cancer patients though, and I suspect the radiotherapy would be swamping out any anti-oxidant activity.

Edited by member 17 Oct 2025 at 21:56  | Reason: Not specified

More generally, for men on HT, lack of testosterone can lead to lower bone density. Taking a calcium supplement might not be adequate if the calcium isn't being absorbed. Vit D aids in making calcium available for bone density maintenance. It's possible to over-do calcium supplements leading to kidney problems while still not being able to use the calcium due to low Vit D levels. Calcium and Vit D levels can be checked by blood tests. Well worth asking your friendly GP so as to get a handle on all the variables that can be changed by hormone therapy. 

Vit D might be adequately provided by sunlight in summer but winter makes it harder to get your levels up so a supplement can help. There's a once a week pill available.

Jules