How Our Hormones Control Our Hunger, Eating & Satiety | Huberman Lab Podcast #16

Sunlight's Role

Exposure to sunlight plays a crucial role in regulating appetite through the release of melanocyte-stimulating hormone (MSH). Andrew Huberman explains that MSH is activated by ultraviolet light reaching the eyes, which helps suppress appetite by signaling the brain to reduce the desire to eat 1. This mechanism is why people and animals tend to eat less during sunnier months.

When we get a lot of sun, our appetite is reduced or at least it's easier to control.

--- Andrew Huberman

Huberman emphasizes the importance of getting ample sunlight throughout the day to maintain healthy appetite levels 1.

   

Artificial Light

Artificial light can also influence the release of MSH, although it may not be as effective as natural sunlight. Andrew Huberman notes that while ultraviolet light from artificial sources can stimulate MSH, it is essential to ensure that light exposure is safe and not damaging to the eyes 1. Consistent exposure to UV light, whether natural or artificial, can help regulate appetite by maintaining MSH levels.

It's about getting photons ultraviolet light to the eyes consistently throughout the day.

--- Andrew Huberman

This approach can be particularly beneficial for those who lack access to natural sunlight, as it provides an alternative means to control appetite 1.