Vitamin D Links
, Frequently Asked Questions & Answers, Vitamin D Info & More.


These maps from the demonstrate the difficulty of getting Vitamin D naturally from sunshine during the late fall thru early spring months.







Links to the Vitamin D experts.


The Vitamin D Council  

Learn more about Vitamin D from the experts at The Vitamin D Council.




 grassroots health 

A public health promotion organization focused on
vitamin D.

Dr. holick  

Dr. Michael Holick: ‘The Leading Authority on Vitamin D‘.


Order The Vitamin D Lamp and other Sperti sunlamps at the official Sperti store.


 “The most Vitamin D information on the web!”  –


ncbi-logo-3 National Biotechnology Center for Information. For more advanced scientific data.  Keyword: Vitamin D

Miscellaneous Questions, Answers & Info

How do I use the Vitamin D Lamp?
A manual is included with your order. Here’s the basics, with an example:

Place it on a flat and stable surface (the kitchen table – we’ll use this example, so you’ll be sitting in a chair). Plug it into any regular power outlet. Sit down in front of the lamp, you may remove your shirt for more skin exposure. Now that you are sitting in front of The Vitamin D Lamp position your body approximately 18” inches (46 cm) away. Rotate the timer dial to any time duration between 1 and 5 minutes. Put on your UV protective eyewear, and then flip the switch to ON. The unit will instantly light up and begin emitting appropriate amounts of UVB to synthesize Vitamin D through your skin, naturally! The Vitamin D Lamp will turn off automatically.

related notes:

The unit emits bright warm light, but it does not get hot to the touch.
To prevent potential sunburn on your initial use (this would depend on your skin type and current sunshine/UV tolerance – like pale winter skin v. summer tan skin) you may wish to do a 2 or 3 minute session your first few times (see manual). Also, sitting closer to the bulbs/unit increases the intensity and increases the chance of sunburn.
On average, most people are doing 5 minute sessions, 2 to 3 times per week.

You can use it less, even one session a week or a quick 2 minute session is going to generate some healthy Vitamin D.  – Just like exercising . . . a little is better than nothing.


What safety features and benefits come with The Vitamin D Lamp from SPERTI?

1) We use premium quality, custom SPERTI bulbs that are specifically designed for The Vitamin D Lamp.

2) You have control of your exposure time, your unit has a timer dial with automatic turn-off when the desired number of minutes has expired.

3) Protective UV eyewear is included with every order, two pair.

4) The ballasts that we use are quality electric ballasts (safe), we do NOT use magnetic ballasts.


  Is getting Vitamin D from UVB (sunshine or Vitamin D sunlamp) different than taking a supplement pill?
Answer:  Yes, different.
  “Not only does sunlight make vitamin D but also beta-endorphin, which makes you feel better,” Dr. Holick tells Newsmax Health. “There’s also nitric oxide, which can lower blood pressure, and a host of other substances that you would never get just by taking a supplement.”

Sun exposure can also help regulate circadian rhythm, lower blood pressure, ease depression, boost the immune system, and even reduce the risk of certain cancers, notes Dr. Holick, who recommends about five to ten minutes of unprotected exposure a day.

: Will sitting next to a sunny window indoors boost your Vitamin D levels?
Answer: No, most windows block the UVB rays (shorter wave) that generate Vitamin D naturally.
Details: Common windows allow much of the UVA rays (longer wave) to pass through which makes tanning possible, but there is not Vitamin D generated.
Notes: Some modern construction is using glass that blocks all UV rays. Car windshields are made to block both UVA and UVB.


Question: Can you use it every day?
Answer:  Yes, you cannot overdose on natural Vitamin D. For most, every day is not necessary, on average – Vitamin D Lamp users will do two or three 5 minute sessions per week, which is sufficient for most.


What is the difference between “S.A.D. Lamps”  and UV Sunlamps?
The Vitamin D Lamp (a UVB sunlamp) and a S.A.D. lamp (seasonal affective disorder lamp) are very different products.
A “S.A.D. Lamp” (Light therapy box, bright light box, SAD light, etc.) is a broad spectrum bright light box/lamp that does NOT emit UV rays that will generate Vitamin D in the body. A SAD Lamp is a totally different device that emits no UV rays, and UV rays (UVB rays in particular) are those which generate Vitamin D in the body. – It can be confusing since many people who have S.A.D. (Seasonal Affective Disorder) also have Vitamin D deficiency, the cause of both being a lack of bright sunshine.

Do you ship to Canada and Internationally?

Yes, we also ship to Canada, European Union countries and many more. We ship internationally with US Postal International service.

You can learn more about other Sperti UV sunlamps,
plus more Vitamin D Lamp information at the SPERTI website & store. 

The original & best source = sunshine.

As we all know, our opportunities to ‘soak up some sunshine’ are limited by season, weather, mobility, work schedule, etc..
Even on a sunny winter day the sun is too low on the horizon to generate vitamin D. 

*See the EPA.Gov “Vitamin D Synthesis” maps.


Vitamin D Lamp New 2015

The Vitamin D Lamp
Available for you 24/7 & 365 days a year!

A full session takes only five minutes.

Vitamin D Supplements

Readily available and affordable. However, there are a few benefits to natural vitamin D synthesis from UVB rays.

“Not only does sunlight make vitamin D but also beta-endorphin, which makes you feel better,” Dr. Holick tells Newsmax Health. “There’s also nitric oxide, which can lower blood pressure, and a host of other substances that you would never get just by taking a supplement.”


Dietary sources of Vitamin D.  – It can be hard to get enough vitamin D from your diet.  Hope you like these foods! 😉


fish – Salmon







Are you deficient in Vitamin D?

You can easily and safely test your vitamin D blood level at home and help contribute to valuable research.
Our friends at Grassroots Health have a Vitamin D testing kit available, and they are currently offering you the ability to participate in a national vitamin d research project.
Kits are sent directly to your home, and include a finger-prick blood spot test that can be mailed back to Grassroots Health (GRH) for processing.
It is easy to sign up and participate, and you will be helping vitamin D research – just as it helps you!
Test kits cost $60 to $70, depending on the subscription you choose.
Click here to learn more!


Infographics courtesy of GrassrootsHealth. 

– These findings suggest that 25(OH)D concentrations above 50 ng/ml may provide additional benefit in the prevention of breast cancer.

Vitamin D Day is led by the Vitamin D Council, Vitamin D Society and GrassrootsHealth, non-profits with a passion for everything vitamin D.

The day serves as a time to learn and to educate others upon the importance of vitamin D for human health. By doing this, we move a step closer to ending the vitamin D deficiency pandemic!

They have created an informative website that you will enjoy. There is abundant Vitamin D information, videos, links, and much more. Their website is a good Vitamin D info resource year-round, not just on the November 2nd ‘day of awareness’.

Click here to visit the official Vitamin D Day website.




How does your body turn UVB rays into healthy & natural vitamin D?
The science of natural vitamin D synthesis.