https://www.siliconvalley.com/2019/12/23/how-to-navigate-the-holidays-if-you-have-dietary-restrictions-or-food-allergies/

The holidays are a particularly challenging time for people with dietary restrictions. Whether they are with family, friends or coworkers, festive gatherings around food can be stress-inducing for those who have limitations to what they can eat. We can all play a role of arming ourselves with information about dietary restrictions in order to be supportive and caring.

Dietary restrictions go beyond typical concerns for healthy eating or even weight loss and affect those where the restriction is more by necessity, not choice. Common dietary restrictions include food allergies and intolerances, vegetarian and vegan diets, and medical concerns that require special diets. Even if you don’t have a dietary restriction, you likely have a friend or family member who is affected.