Everyone is obsessed with vitamin D, but it is only one of the essential vitamins your body needs in a day to function optimally and boost immunity. Even if you eat a perfect diet full of healthy plant-based protein, complex carbs from fruits and vegetables, legumes and whole grains, and heart-healthy fats from nuts, seeds, and a small amount of oil, you would have a hard time getting all 13 of the essential daily vitamins your body needs to function at its optimally healthy level, says Mastaneh Sharafi, a nutrition scientist and Registered Dietician.

Follow the “Food First” approach to nutrients, she says, but then be realistic about what you’re able to absorb, and consider supplementing, especially with two hero vitamins that she says are more important than others, especially when eating mostly plant-based.

“Sometimes it simply is not possible to eat enough nutrients in your healthy, mostly plant-based diet to reach the recommended amount of vitamins and minerals your body needs in a day,” explains Dr. Sharafi, a Ph.D. in Nutritional Sciences, who has helped to develop multivitamins such as those for Ritual, to help healthy eaters make up the gap.

You may get your daily C in that half a grapefruit or an orange in the morning, or in the red bell pepper that you added to your salad for lunch. But there are other more challenging vitamins and minerals your body needs to function, your cells to operate all their tasks without failing, and your brain needs to focus.

Those essential vitamins that the USDA wants us to get on a daily basis are: Vitamin A, vitamin C, vitamin D, vitamin E, vitamin K, and the B vitamins, which are: thiamine, riboflavin, niacin, pantothenic acid, biotin, B6, B12, and folate. To get a sense of what you would have to eat to get all that, Dr. Sharafi explains that you’d be taking in 2,000 or more calories, eating a heaping table of every plant under the rainbow–including a large salad of leafy greens, a grain bowl with multicolored roots like beets, and peppers of every hue, a snack of blueberries, raspberries, or watermelon, a dinner that includes tomato, and legumes such as beans, plus handfuls of nuts and seeds, and more. It’s not that it’s impossible, just that it’s improbable, and even, given our schedules, budgets, and access to farmstand bounty, not practical.

“Not everyone achieves that level of perfect eating, of course,” she says. “For the times when you can’t get enough vegetables, fruit, nuts, seeds, whole grains, and legumes, there is always a multivitamin or supplement option.”

Instead of holding yourself to a somewhat unrealistic standard of trying to eat a plethora of plant-based foods every day, all day, for the rest of your life (which would be nice, of course) there is a way of ensuring you get the vitamins you need, advises Dr. Sharafi, who received her degree from Penn State University and has spent a career researching dietary patterns and community nutrition. Her dietetic work is focused on promoting healthy eating habits by translating the science of nutrition into practical information.

Food first is the way to go, but when you need a little help there is nothing wrong with adding in some supplements every now and then, as long as they are clean plant-based sources of vitamins that contain only the necessary elements and nothing else.

If you only take 2 vitamins, make sure you get Vitamin D3 and Omega-3 every day

“The two supplements you need most are vitamin D3 and omega-3, especially for individuals eating a mostly plant-based diet,” says Dr. Sharafi. The reason for this, she explains, is that if you are eating a 2,000 calorie diet, full of plant-based, healthy nutrient-dense foods, it’s nearly impossible to get absolutely everything you need from your salad bowl, grain bowl, or healthy snacks in 24 hours, or even over the course of two to three days of healthy eating.

Here are the vitamins you need to take, to supplement a healthy diet

Vitamin D3

More than 97 percent of women age 19-50 are not getting enough Vitamin D from their diet, says Dr. Sharafi. “Look for a multivitamin with 50 mcg of vegan-certified Vitamin D3 to help support normal immune function. One study showed that taking D3 raises vitamin D levels 43 percent over 12 weeks, as compared to no change in a placebo group in a university-led clinical study.*

Vitamin D is a vital element that allows your body to absorb other important nutrients such as calcium, which helps your bones say strong. But D has also been linked to your immune system’s ability to fight viruses and your body’s ability to combat or prevent chronic conditions that, according to the Mayo Clinic, include “rheumatoid arthritis, chronic pain, diabetes, high blood pressure, cardiovascular disease, and some cancers.” Because few foods contain vitamin D naturally, taking a supplement may be your best bet. Mayo recommends that adults get at least the RDA of 600 IU, “however, 1,000 to 2,000 IU per day of vitamin D from a supplement is generally safe.” Taking multiples of that can be detrimental to your health.

Omega 3 fatty acid

Omega-3 is essential to your anti-aging and immunity, says Dr. Sharafi. Studies show that omega-3 may help prevent or improve chronic conditions, including heart disease, and certain cancers, depression, and inflammatory conditions, even Alzheimer’s. You can get this essential fatty acid in flaxseeds or soybeans or even in smaller amounts in leafy green vegetables, or by taking an algae supplement, but before your choose your source, look at the type of omega-3 since some are DHA and others are EPA and they are effective in different ways.

“There are some nutrients that we do not think about but are equally important as vitamin D,” says Dr. Sharafi. “When it comes to omega-3, the beauty of plant-based diets is that you get a lot of essential omega-3 fatty acids. So you get plenty of ALA from your diet. ALA is called short-chain omega-3 fatty acid. There’s another group called long-chain omega 3 fatty acid, which includes EPA and DHA. So, when you look at healthy patterns, if you follow a healthy vegetarian diet, you get 100 mg of DHA plus EPA. The guidelines recommend 200 mg DHA and EPA. That’s another reason that supplementation comes in handy. If you follow a typical healthy vegetarian diet then you need to get supplementation for omega-3 fatty acids.

When you choose supplements, Sharafi suggests you consider replacing omega-3 daily, at a dose of 250–500 mg combined EPA and DHA each day. But not every vitamin needs to be taken daily. “Some soluble vitamins excrete from your body daily so you need to have them daily. Some of them stay longer in the body. The recommendation is first to make sure you are eating a balanced diet. So if you are eating flaxseed one day and not the next, just estimate how much you eat over the course of a week, then divide that into seven days.”

Eating a balanced diet means following a pattern of healthy eating

Work on a “Food First Philosophy” when it comes to getting nutrients, she adds. “In my work, I look at how much nutrients people are getting, how much is the gap, then we identify those people who have gaps and figure out how to fill them.”

Another thing she wants consumers to understand is that one reason to take supplementation is nutrient adequacy, making sure that you are absorbing a sufficient level of nutrients. “Nutrient adequacy is not just dependent on what you eat. It is also dependent on how your body processes the nutrients, We all have a different genetic makeup. It can influence how our body processes certain nutrients. I think looking at studies on nutrient and gene interactions becomes really important. I study nutrigenetics, which is the research to see if there are any nutrients that get processed differently if you have different genetic makeup. One of the best examples is folate. About one-third of us have a certain genetic variation that makes it hard for us to process synthetic folic acid.”

The four other vitamins to consider: E, Iron Magnesium and Folate

Vitamin E helps you fight against oxidated stress. “You may think, ‘I eat plenty of  antioxidants and I am getting enough vitamin E from my diet.’ But if we look at the food sources, it’s in many foods, but not that much. and even less gets absorbed,” she says.

“When you add up all this food that you are getting it is not going to add up the RDA for the vitamin E. Let me give you an interesting example. I follow a plant-based diet myself. Talking about the plant-based diet. It is very broad. it could be vegan, vegetarian, diets that are more focused on plant-based, or some that have some meat, like the Mediterranean diet.

“What do dietary guidelines usually do? They offer healthy food patterns. Every time they arrive, they provide recommendations of different food groups within each category so you can consume those food groups and have a healthy dieting pattern. For example, my diet is 2,000 calories per day, and I can look at the bracket and see how much of each food group I should eat, to meet the definition of a healthy eating pattern. For a female who follows a healthy vegetarian diet, it should provide all the nutrients that I need because this is the best way you can eat. But there are still some nutrients that you still will not get 100 percent. It just does not add up in a day.”


“Folic acid isn’t something that you find in nature. It’s actually added as a fortification to grains like cereal, for example. For people who have this certain genetic variation, it is hard for them to process the folic acid efficiently,” Dr. Sharafi explains. “So, when we are thinking about the form of nutrients we need to come up with, it’s a form for those people who have the genetic variation. We say we are getting 100 percent of our needs for the day with all these fortifications, but it doesn’t mean your body is actually getting enough. A plant-based diet, which we always need to plan for, provides the nutrients but you need to know, are they bioavailable or not? That also impacts the decision about what we need to supplement and what we should not.”


“We can try to eat iron-rich foods all day, but it may not be enough, again, since when you’re measuring iron content in foods like spinach, it’s not always absorbed into the body,” Dr. Sharafi explains. You have to look at bioavailability. With bioavailability, a good example is iron. So, my diet is plant-based and I mostly get my iron from plants and I make sure I try my best to take it with vitamin C which helps it get absorbed. When I have a plant source food like spinach, I try to have some citrus with that. Also, I try to avoid things that are high in calcium, because it’s going to reduce that absorption. There are strategies to improve absorption.”


Yes we do need magnesium, explains Dr.Sharafi. “You can get some good levels from your diet. When you look at the population, what is very interesting is sometimes you can see that when the average population is eating a standard American diet, they are not getting enough magnesium. But when you look at the percentage of people who are eating plant-based, they are getting enough magnesium. So for people who follow a plant-based diet then magnesium shouldn’t be an issue.” But on days when you aren’t eating enough whole foods or your diet isn’t healthy you may want to supplement, she adds.

Your Body’s Vitamin Needs Evolve Over Time, Especially After 50

Of course, the first choice is to eat your nutrients, whenever possible, explains Sharafi. “But sometimes that is not possible.” She adds that each person has to understand their individual needs, which change over time. For instance, men over 50 have trouble absorbing nutrients like B12 from food sources. “Because of this, the National Academy of Medicine (formerly the Institute of Medicine) recommends that adults over the age of 50 obtain most of their vitamin B12 from vitamin supplements or fortified foods.”

As we age, bone health is more of a concern, she explains, so taking a multivitamin with magnesium can help support bone health, and since magnesium is found in pumpkin seeds, spinach, chia seeds, avocados, black beans, and other plant-based foods.

“Some key nutrients are hard to get enough of, especially considering how few people get from their diets, or due to lifestyle and genetic factors,” and not everyone is eating a whole food plant-based diet. For heart health, along with omega-3 she recommends taking vitamin K2 and magnesium to help your muscle function at their peak. And she recommends taking zinc and vitamin A to help support normal immune cell function. Dr.Sharafi is an ambassador for Ritual because it offers all of the essential vitamins but not more than you need. Each formula is created for women, men and with different ages and life stages in mind, but of course, first, eat your vegetables.


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